Introduction:

Tabanidae, also known as horseflies, are pesky insects notorious for their painful bites. A horsefly bite can not only cause discomfort, but in some cases can also be dangerous to human health. In this article, we will discuss what to do if you are stung by a horsefly, why horsefly bites can be potentially dangerous, and how best to care for the wound for a quick recovery.

Why is a horsefly bite Dangerous?

Although most horsefly bites are not serious, they can pose certain risks, especially for people who are sensitive to insect bites or allergic reactions. Some reasons why a horsefly bite can be dangerous:

Pain and discomfort:
horsefly bites can be extremely painful. The bite of a horsefly is often described as a sharp sting, and the affected skin may become red and swollen.

Possible Allergic Reactions:
Some people may experience allergic reactions to horsefly bites, resulting in severe itching, swelling and even hives. In rare cases, a severe allergic reaction called anaphylaxis can occur, which can be life-threatening. If an allergic reaction occurs, it is advisable to consult a doctor immediately!

Infection risk:
A horsefly can transmit bacteria from person to person, thus causing a bacterial infection; Scratching the horsefly bite can lead to open wounds, which are also prone to infections such as bacteria.

What to do in case of a horsefly bite:

If you are stung by a horsefly, there are some steps you can take to relieve the pain and reduce the risk of complications:

Cleaning:
Gently wash the area around the bite with mild soap and/or water to remove possible bacteria and minimise the risk of infection.

Disinfect:
After cleaning the wound, it is best to disinfect it with a disinfectant so that the parasites/bacteria do not have a chance

Cooling:
Cool the bite immediately with a cold compress or icepack to reduce swelling and pain.

Painkillers:
Over-the-counter painkillers such as paracetamol can help reduce pain.

Keep the Bite Clean:
Avoid scratching the bite to reduce the risk of infection. Keep the wound clean and cover with a sterile dressing if necessary.

When to seek medical help:

In some cases, it is advisable to seek immediate medical attention.
ls you show a severe allergic reaction, such as breathing difficulties, dizziness, or swelling of the face and throat. Even if you don’t carry medication with you!
If the bite is significantly swollen, produces pus or shows signs of infection.
If you do not find relief from symptoms with home remedies,

How to prevent a horsefly bite?

Wear protective clothing:
Cover yourself as completely as possible with long sleeves, long trousers and closed shoes.

horsefly trap:
Place a horsefly trap in areas where horsefly cause nuisance. For example, if you have a lot of trouble with horsefly in your garden, a horsefly trap can be an effective means of protecting yourself. A good horsefly trap can even reduce the population to the point where they are virtually not a nuisance.

Conclusion:

A horsefly bite can be more than just an inconvenience. Depending on a person’s sensitivity, horsefly bites can be painful and become potentially dangerous if allergic reactions or infections occur. It is important to follow the right steps to treat and care for the bite, and to seek medical attention if necessary. With proper care, you can recover quickly from a horsefly bite and prevent further complications. It is also possible to take measures to prevent horsefly bites!

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Introduction

A UV-A meter is an indispensable tool for measuring the intensity of UV-A radiation. The meter is widely used in various applications, such as insect traps, inspection lamps and more. Over time, the intensity of the UV-A radiation may decrease, reducing the effectiveness of the lamps. In this blog, we will provide a detailed explanation of how to use a UV-A meter to measure UV-A intensity and ensure that your UV-A lamps are performing at their best.

Step 1: Preparation

Before you start measuring UV-A intensity, make sure you have the right UV-A meter. Find the data of the lamp to be measured and check whether it falls within the measuring range of the UV-A meter. (light wavelength and maximum or minimum measurable intensity (mW/cm²)(μW/cm²).

Step 2: Switch on

Make sure the lamp is switched on for at least 5 minutes before taking the measurement. This gives the lamp a chance to warm up and reach its maximum value.

Step 3: Position the UV-A meter

A measuring distance is often prescribed. This distance may vary from one UV-A lamp to another. Remember that distance can affect the measurement; if you hold the meter further away from the lamp, the intensity will be lower.

Step 4: Take the measurement

Switch on the UV-A meter and set it to the correct setting ( example: .000 / 0.00 / 00.0 ). Then read the display and wait for the reading to stabilise. The unit for UV-A radiation is often expressed in milliWatts per square centimetre (mW/cm²) or microWatts per square centimetre (μW/cm²). To be sure of your measurement, it is wise to repeat it several times!

Step 5: Record the Measurement

Record the measured value for later comparison with other measurements or to determine whether the intensity of the UV-A lamp is within the desired prescribed range. Each UV-A product has its own intensity value. Tracking measurements can also help identify trends in lamp performance over time.

Step 6: Safety

When working with a UV-A meter, it is essential to take precautions and follow the manufacturer’s safety instructions. Never look directly into the UV-A lamp! UV safety glasses are recommended.

Conclusion

A UV-A meter is a valuable tool for measuring the intensity of UV-A radiation and ensuring that UV-A lamps continue to work effectively. By following the steps in this guide, you can take accurate measurements and ensure that your UV-A lamps perform at their best in various applications. Remember to follow safety instructions and take regular measurements to maintain optimal results.

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What are the requirements of an HACCP insect trap?

Bacteria, viruses and parasites
The main purpose of an insect trap is to address biological hazards. Indeed, insects can carry bacteria, viruses and parasites.

These bacteria, viruses and parasites can be transferred to the produced food if an insect comes into contact with the food.
A good insect trap is therefore very important in places where food is produced!

In addition to the fact that the wrong insect trap can contribute to chemical and physical hazards, it may not even solve the aforementioned biological hazards at all.
An insect trap with a high voltage grid is a good example. This is because the trap does kill insects the moment they fly into the grid. But even though the insect has been killed, this does not mean that the bacteria, viruses or parasites carried by the insect have also been killed. The disintegration of the killed insect may allow parts of the insect to enter food production and still pose a hazard.

glueboards
An insect trap that wants to meet the HACCP code needs a good trapping method that ensures the insects stay in the trap. The solution of choice for this is an insect trap with an adhesive plate.

In an insect trap with glueboard, the insect is lured to the trap by lamps with UV-A light. Then the insect lands on the glueboard in the trap. The glue traps the insect on the glueboard. Thus, the insect is caught in the trap in one piece and cannot move. As a result, the insect is no longer a health hazard.

Easy cleaning
It is obviously important that an insect trap that wants to meet the HACCP code must be easy and easy to clean. There should be no places on the device where dirt can easily accumulate, as this is often a source of bacteria.

What other dangers can an insect trap pose?
A traditional insect trap uses fluorescent lamps. These bulbs are made of glass and contain a heavy metal (mercury). Breakage of the lamp can release both mercury and glass particles.

Mercury poses a chemical hazard (mercury poisoning) due to the high toxic content of this metal. The glass particles can lead to physical danger when consumed, after all, ingesting glass can lead to major problems in humans.

Safe lamps
So an insect trap that wants to meet the HACCP code will need special lights.
These lamps, if broken, may not simply disperse the glass and mercury. To prevent this, there are lamps with a special coating.

These special lamps can fall up to a height of 2.5 meters without scattering glass or mercury, due to a plastic layer placed over the lamp that holds the broken bulb together.
Insect traps with LED bulbs have the advantage that the LED bulb no longer contains mercury. But again, he must be safe if he falls. The insect trap with “shatterproof LED lamp” is the best option in this case.

In conclusion
, The above points determine whether an insect trap is suitable for use in professional setting and thus whether it meets the stated HACCP code

An insect trap with glueboard, safe lights and that is easy to clean is suitable for use near food. Often, when an insect trap is sold, it is mentioned if it meets the HACCP code.

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A UV-A(365nm) lamp can help Authentication of exclusive wines

Forgery

Old bottles

For old bottles of wine, you can look at the paper or glue remains of the label.
Papers produced before 1950 do not light up under UV-A(365 nm) light. After 1950 a substance was added to paper (ultra white) which made paper whiter, this caused the fluorescence visible in paper. A label of a bottle of wine from before 1950 will never light up under UV-A(365nm) light. Old adhesives from before 1960 with which the label is stuck on the bottle hardly react to UV-A(365nm) light, newer synthetic adhesives do light up under UV-A(365nm) light. So this can give an indication if the bottle is as old as the age stated on the bottle.

New bottles

Newer bottles of wine sometimes have UV holograms or codes printed on the label or bottle. These are not visible under normal light, only when a UV-A(365 nm) lamp is shone on the label they can be made visible. This allows you to give an indication of whether a new bottle of wine is original or a fake.

POWERLIGHT flashlights are the most powerful UV-A flashlights available on the world market!

Looking for a professional real UV-A flashlight? POWERLIGHT flashlights offer an unprecedented UV-A(365nm) light output!

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1. Metal Industry

A UV-A(365nm) lamp is often used in non-destructive testing, an examination method for welding joints or castings, for example. A UV-A(365nm) lamp and a fluorescent liquid can be used to quickly determine any defects (cracks).

Penetrant crack testing (‘Farbeindringverfahren’) is a very old technique that uses the capillary action of liquids. This involves dipping or painting products with a fluorescent liquid that soaks into any cracks. If the parts are then inspected with a UV-A(365nm) lamp, any cracks in a product or weld will light up brightly. It is a fast and cheap NDT technique that can be used for various purposes. In addition to the term non-destructive testing (NDT), non-destructive inspection (NDI) or non-destructive evaluation (NDE) is also used. The technique described here can also be used for research in:

Oil and gas industry control of pipelines.
Aviation check for cracks or metal fatigue in a landing gear, for example.
shipping inspection of ship components.
Defence control of military vehicles.

2. Cleaning Industry

To check the quality of cleaning work and to introduce improvements, a UV-A(365nm) lamp can be used. We recommend an inspection 2 hours after cleaning. With UV-A(365nm) light, cleaning errors can be made visible. Such as systematically missing parts of the surface to be cleaned, smearing dirt to edges and corners, or drips of detergent. Textiles and bedding can also be checked for cleanliness. A clean surface looks even. In case of errors, those responsible for cleaning – the client, the cleaning company and the cleaner himself – can be confronted with a clear visual result. It is often found that either systematic or occasional errors are made. If there’s any actual cleaning done. This can be due to all sorts of factors: from inadequate instruction or training to a lack of guidance and control or too little motivation and appreciation. “If you want to achieve improvement, you have to give feedback.” The UV-A(365nm) lamp provides sufficient evidence for this.

3. Laboratoria

A UV-A(365nm) flashlight can be used in research laboratories for visualizing nucleic acids after gel electrophoresis and ethidium bromide staining. A UV-A(365nm) lamp can also be used for detection of chemical residue and particles.

4. Medical world

Much in the news are (the operating rooms of) hospitals and mostly negative. Due to a lack of coordination and unclear division of tasks and responsibilities, some places are rarely or never cleaned. This causes the dust to accumulate. The rack where all kinds of instruments are stored in sterile packaging is itself far from sterile. The bottom of an eye surgeon’s operation lamp was also found to have never been cleaned, a check with a UV-A(365nm) lamp showed. The cleaning has been outsourced to a cleaning company which, however, is not allowed to touch the equipment. Then it is unclear who should do it. So, mistakes can happen that you don’t want to happen on healthcare sites. With a UV-A(365nm) lamp this can be prevented by performing a short daily inspection. With a worthy UV-A(365nm) lamp you only have to shine through a room for a short time and pretty soon a not (well) cleaned surface will light up. And if it is cleaned properly, this is also quickly detected. Through this short inspection you can very easily prevent a lot of problems and you can guarantee patient safety.

5. Hand hygiene training

Special UV lotion can be used to check whether sufficient hand hygiene is present. Otherwise, handwashing training can be given so can be practised in schools and medical facilities. This training makes it easy to see whether all areas of the hands are clean after washing them. If this is not the case, spots on the hands will light up under UV-A(365nm) light after handwashing. These spots with (UV lotion) then visualize nicely where any bacteria remained on the hands.

6. Bruising

In forensic medicine, UV-A(365nm) light is used to visualize skin injuries. It has been reported that UV-A(365nm) light can help visualize an old bruise and also provide an estimate of the shape of the object that caused the bruise. For example, when the bruise was faint, old and difficult to identify, UV-A(365nm) light was used to successfully identify bite wounds 6 months after an injury. This application is for example very useful for research on children after suspicion of child abuse bruises remain visible long after incidents under UV-A (365nm) light

7. Woodslamp

The Wood’s lamp is a UV-A(365nm) lamp. It is used as a diagnostic tool in skin diseases, both in humans and animals, including mycoses (tinea capitis), which light up in different colors (fluorescence), and erythrasma.

– Green: Trichophyton schoenleinii, Microsporon audouinii, Microsporum canis.
– Yellowish brown: Malassezia furfur (pseudohyphae of Pityrosporon orbiculare (pityriasis versicolor)).
– Rood, fel oranje: Corynebacterium minutissimum (Erythrasma).
– Red in a follicular pattern: progressive macular hypomelanosis

Hair stumps infected by Favus (Trichophyton schoenleinii) light up greenish yellow. Other Trichophyton species have an endothrix growth habit (inside the hair) and give no fluorescence.

8. Police detective

UV-A(365nm) light helps you see what your eyes can’t see at a crime scene. At a crime scene, fast and accurate detection of possible traces is of vital importance. Many biological/body fluids are fluorescent in nature. When such traces are illuminated with light of the correct wavelength, deciding which light source to use to achieve the best result in finding traces at the crime scene is an art. It takes years of experience to learn which light to use depending on the occasion – it’s not an exact science. New users using UV light may naturally use combinations of light and glasses to determine what is the best option for that occasion, by trial and error, until confidence and knowledge is built up. No two crime scenes are alike. No police detective uses the same method,

What body fluids are fluorescent
– Sperm (DNA)
– Vaginal discharge (DNA)
– Urine (DNA if it contains blood or other body fluids)
– Sweat (DNA)
– Saliva (DNA)

Bloodstains Through the use of ultraviolet light, it is possible to do an effective and quick check for possible bloodstains. A bloodstain exposed to UV-A(365nm) light absorbs all light of that bandwidth and does not reflect – that is, it does not fluoresce in any way. So the stain will appear black under UV. Although it is not a conclusive test for blood, it is an effective presumptive test and can often require unnecessary collection of stains that look like blood but are actually from another source.

Bone fragments light up under UV-A(365nm)

Fingerprints There are also methods known in which a UV-A(365nm) lamp can be used to detect fingerprints.

Interception of secret messages can be quickly screened for invisible ink and also read without first making the invisible ink permanent

Narcotics Some narcotics such as amphetamine, cocaine and certain MDMA tablets are clearly fluorescent when illuminated with UV-A(365nm) light. Even minute quantities of certain narcotics can easily be made visible when illuminated with UV-A(365nm) light, making the work of investigating officers much easier when, for example, searching for suspected narcotics. Powder and powder residues left on clothes, hands, tables, sinks, scales, etc, which are normally not visible in normal light, become highly visible when using UV-A(365nm) light.

9. Police detective / Police / Mobile unit / Gendarmerie

SmartWater, SelectaDNA, tagging spray, The spray is designed to be applied to theft-prone objects. If the police raid a fence, they can use a UV-A(365nm) lamp to check for items treated with synthetic DNA. Via the particles with microcode, the owner can be identified. Tried using the same technique to mark robbers leaving the store. And railroads use such spray to mark copper, making it easier to track down copper thieves or robbers.
They are also investigating whether the sprays can be used to track down rioters. A UV-A (365nm) lamp can also be used to check whether the spray has been applied correctly.

10. SmartWater detection

Check if SmartWater, SelectaDNA or other tagging spray has been applied correctly to objects, also search for objects with this paint with a UV-A(365nm) lamp.

11. Safety professionals

Anyone who in practice deals with determining the authenticity of value documents, such as passports, identity cards, residence permits, driving licences, diplomas, official acts, visas etc. but also for example banknotes or stamps must have come across the necessary forgeries. A UV-A(365nm) lamp is therefore indispensable in the process of determining authenticity. For example, fluorescent patterns or metal chips are included in such value documents, which light up clearly under UV-A(365nm) light. These are often difficult to counterfeit, and therefore a UV-A(365nm) lamp is indispensable and an important part in determining authenticity.

12. Fire Department

How UV light is used in arson. Fire investigators use ultraviolet light as a simple, reliable and cost-effective method of detecting arson.

Ultraviolet light is used to detect information otherwise invisible to the human eye and uncover valuable information that can be used to solve a fire investigation. UV light is used to: – determine the presence of accelerants – identify flow patterns UV light not only helps to determine the presence of accelerants (a substance that accelerates the spread of fire or makes a fire more intense), but also to quickly detect remnants of accelerants and locate where the fire started. The colour that accelerators glow is affected by exposure to heat.

The longer an accelerator has been exposed to heat (i.e. its origin), the more its fluorescence colour differs from that of other, less exposed areas. Traces of accelerants are absorbed in a fire and are therefore almost always invisible to the naked eye. However, the accelerator-affected surface is easily distinguishable under UV light.

Hydrocarbons Volatile hydrocarbons such as petrol, kerosene and other petroleum fractions such as benzene, acetone, grease, lard, vegetable oils, paints, etc. fluoresce when exposed to UV light. By using UV light, researchers can accurately determine where samples should be taken for further laboratory analysis. UV light can also be useful in locating fragments of incendiary bombs, as explosive casings are often fluorescent. Samples collected in cans and plastic evidence bags can be heated in hot water to form condensation.

The latent remains of the accelerator come to the surface and this can be observed under UV light. UV light was used to identify accelerator casting traces, accelerator reservoir shape, and casting traces leading back to accelerator containers. UV light indicates accelerants long after their smell is detectable. Masking an accelerator does not prevent UV detection. Accelerant on skin or clothing will also fluoresce.

Advantages of UV light compared to sniffer dogs or mechanical “sniffers”-The use of UV light is not affected by wind conditions.-The “sniffer” indicates a general area of saturation, but does not detect specific contaminated areas. This makes sampling difficult. UV light detects specific areas. – The “sniffer” is not effective until two to three days after saturation. UV lamps have been proven to effectively fluoresce samples for up to two months after an incident.- After a prolonged hot fire, accelerant odours are usually gone.

13. Mechanic/installer

A technician can use UV-A(365nm) light to detect leaks. This technique is already widely used in air conditioning systems. A fluorescent liquid is added to the coolant and if a leak occurs it can easily be found with a UV-A(365nm) lamp. This fluid is often added to air conditioning systems as standard. But not only for A/C leaks, there are different fluids available on the market for different purposes. Some liquids already fluoresce under UV-A(365nm) light engine oil and petrol are fluorescent with a lamp of the right strength. Also, some water pipe leaks can be found with a UV-A(365nm) lamp because water leaves calcium residue and this calcium then lights up. Furthermore, most biological liquids light up under UV-A(365nm) light.

14. Art Restoration/Conservation Studies

To enable restorers/conservators to demonstrate evidence of imperfections, restoration and repair on objects such as paintings, paper, books and ceramics, which are not readily visible under normal lighting. Other applications include detecting forgeries, moulds, and improving hard-to-read papers and parchments. The inspection of works of art under UV-A(365nm) light is a means of revealing imperfections and evidence of restoration, an important aspect of authentication for valuation and sale also

15. UV paint drying

A UV-A(365nm) lamp is ideal for drying UV lacquers, primers, adhesives, nail polishes and putty. With UV-A(365nm) light you shorten the curing time and curing time considerably, so repairs and damage repairs can be done faster, especially for spot repairs where more and more work is done on locations and outside, the technique can be very useful. So you can quickly spray a car before a rain shower because you are not bound to longer drying times. Also, nail polishes dry superfast, so you don’t have to wait long, until your nails are dry again before you can do anything else.

16. Clear varnish validation

UV-A(365nm) lamps are commonly used for clear coat validation on printed circuit boards to ensure uniform coverage. Also on other spray jobs you can check if there is an even coverage of clear coat, an even coverage gives an even fluorescence, an uneven coverage gives dark and light spots in the clear coat.

17. Detection of particles before coating

Before powder coating or spraying an object, it is important that the surface is free of grease and dust. Grease prevents paint from adhering properly. Dust particles then cause unevenness in the paintwork. A UV-A(365nm) lamp is ideal for detection of (dust) particles. A large part of particles light up under UV-A(365nm) light. A good white light flashlight can also be used, under floodlight (light from the side) is dust also very visible. So on surfaces where dust particles are not wanted, UV-A(365nm) light can be used very well.

18. Detection of particles in cleanrooms

In a cleanroom, UV-A(365nm) light can be used to detect dust particles. And the light can then be used to remove dust particles from equipment – after all, dust is a cleanroom’s worst enemy. Because of the different particle colours, even the origin of a (dust) source can be determined.

19. Hydrocarbons

The smallest amount of hydrocarbon contamination (oil or grease) in an oxygen vessel or connecting line can have catastrophic consequences. It’s literally an explosive mixture. Most hydrocarbons will naturally fluoresce under UV-A(365nm) illumination. Therefore, this process is absolutely essential for all manufacturers of oxygen tanks and equipment.

20. Follow-up ultrasonic cleaning

A follow-up check can be carried out using UV-A(365nm) light to see whether objects have been sufficiently cleaned. After an ultrasonic treatment it can be determined whether there is still dirt or surface deposits present, especially in places that are difficult to see, for example in the channels of a carburettor. It can be examined whether these are sufficiently cleaned because any dirt lights up under a UV-A (365nm) lamp, it can be quickly determined whether the treatment has been sufficient.

21. Glass industry

In glassware, hairline cracks can be detected with a UV-A(365nm) lamp. Also, old repairs can emerge under UV-A(365nm) light.

22. Ceramic industry

Under UV-A(365nm) light, (hair) cracks in ceramics can be made clearly visible, so an easy and quick quality control can be performed. Both newly produced ceramic objects and old repairs can be made visible under UV-A(365nm) light.

23. Food inspection

Aflatoxins are carcinogenic chemicals produced by special types of fungi that are contaminated in food and feed such as corn, peanuts, sorghum, copra, pistachios, and cottonseed. Aflatoxin contamination does not usually appear in the field. It usually occurs when harvested crops are stored in damp places where mould easily grows. If aflatoxin is detected early, it can be isolated and spread can be prevented. This helps prevent product contamination and financial loss and ensures the safety of agricultural products. With a UV-A(365nm) lamp, the presence/absence of aflatoxin and mould can be determined. If a fresh sample glows green-gold under UV-A(365nm) light, aflatoxin is most likely present, but additional laboratory testing is usually required to draw definitive conclusions.

– Primary contamination: Cereals are already contaminated during cultivation by fungi such as ergot on rye, wheat and barley (so-called field mycotoxins, especially the Fusarium mycotoxins).

– Secondary contamination: stored food becomes mouldy due to Aspergillus or Penicillium (so-called storage mycotoxins (aflatoxins and ochratoxin A). Buildings and equipment can also be a source of contamination

– Metabolism in the animal: Cattle receive mouldy foodstuffs and the mycotoxins are metabolised. They end up in the end products: milk, eggs, meat. An example is aflatoxin M1, which is formed in the milk after contamination with aflatoxin B1.

Checking for Mycotoxin (aflatoxin) with a UV-A lamp is possible for primary and secondary contamination (Aspergillus, Penicillium, Fusarium, Alternaria, Alternaria, Fusarium).

24. Preventive crop care for vineyards and orchards

Prevention is an effective strategy to protect crops from diseases. By applying bactericides, you can protect leaf scars and other injuries and minimize disease. It is of utmost importance that this process is repeated, to protect new wounds when they appear. Grapes, almonds, walnuts, olives and plum growers are examples of crops that have had great success with this treatment. Application process:Add a food grade water-based fluorescent dye to the syringe containing bactericides. Spray bactericides and dye on crops and orchards during the day. Inspect the density and coverage of the dye and thus the coverage of the bactericides on the crops after sunset, with UV-A(365nm) light.

25. Egg inspection

In Europe, it is forbidden for producers and processors/packers to wash or brush eggs. This is because it will damage the cuticle of the egg, which guarantees safety against disease and rotting. A UV-A(365nm) lamp can be used to check that eggs have not been washed or brushed after all. Washing or brushing leaves traces which become visible under UV-A(365nm) light.

26. Quality control of citrus fruit

UV-A(365nm) light can be used in citrus packing plants, and citrus farmers as an aid in the identification and removal of rotten oranges. On the packaging line or in a storage warehouse

This technique works because the rotten spots on, for example, oranges fluoresce strongly under UV-A(365nm) light. It was found that oranges often have spots on the peel that fluoresce less strongly than others, and experiments were conducted to determine whether the presence of these spots was predictive of fruit quality after storage.

Three separate experiments were conducted in the UV room of a packing plant where oranges were removed from the packing line and classified into different classes based on the amount of peel fluorescence present: class 0, with little or no fluorescence; class 1, with a limited number of small fluorescent areas; class 2, with numerous fluorescent areas; and class 3, with large fluorescent areas indicating spoilage or severe mechanical damage.

After 3 weeks at 15 °C, fruits were assessed and divided into groups based on skin quality and presence of spoilage. Fruit classed as marketable were those that could be classified as A high quality. Class 3, the fruit that would be disposed of in UV rooms under current practices, showed a high degree of spoilage and only 5% of the fruit could be considered A saleable after 3 weeks of storage.

Classes 0 and 1, representing fruits with no or low fluorescence, were of similar quality and on average 57% of the fruits were marketable after 3 weeks of storage. In contrast, only 28% of Class 2 fruit were marketable after the same storage period, which was due to skin damage and deterioration during storage. Fluorescence of the peel, even in amounts lower than currently considered in commercial packing plants, has been shown to be a predictor of orange quality after storage.

You can also use a UV-A(365nm) lamp to see if a citrus fruit peel has been treated with chemicals.

27. Geology

The colour change of fluorescent minerals is most spectacular when they are illuminated in the dark with ultraviolet light, and they give off visible light.

Fluorescence in minerals occurs when a specimen is illuminated with specific wavelengths of light. UV light, X-rays, and cathode rays are the typical types of light that produce fluorescence. These types of light have the ability to excite sensitive electrons within the atomic structure of the mineral. These excited electrons temporarily jump up to a higher orbital within the atomic structure of the mineral. When these electrons fall back into their original orbit, a small amount of energy is released in the form of light. This release of light is known as fluorescence.

The wavelength of light released from a fluorescent mineral is often markedly different from the wavelength of the incident light. This causes a visible change in the colour of the mineral. This “glow” persists as long as the mineral is illuminated with light of the correct wavelength.

So different wavelengths can be used in the study of minerals

Most of the fluorescent minerals light up best under a short wavelength (100-280 nm UV-C) and a smaller portion light up best under a long wavelength (315-400 nm UV-A)

Practical use of mineral fluorescence and fluorescence of rocks.

Fluorescence has practical applications in mining, gemology, petrology, and mineralogy. The mineral scheelite, an ore of tungsten, typically has a bright blue fluorescence. Geologists looking for scheelite and other fluorescent minerals sometimes search for them at night with ultraviolet lamps.

Geologists in the oil and gas industry sometimes examine drill cuttings and drill cores with UV-A(365nm) lamps. Small amounts of oil in the pores of the rock and oil-stained mineral grains will fluoresce under UV-A(365nm) illumination. The colour of the fluorescence can indicate the thermal maturity of the oil, with darker colours indicating heavier oil and lighter colours indicating lighter oil.

UV lamps can be used in underground mines to identify and detect ore-bearing rocks. They have also been used on picking lines to quickly find valuable pieces of ore and separate them from waste.

Many gemstones are sometimes fluorescent, including ruby, kunzite, diamond, and opal. This property can sometimes be used to find small stones in sediments or crushed ore. It may also be a way to associate rocks with a mining site. For example: light yellow diamonds with a strong blue fluorescence

are produced by the Premier Mine in South Africa, and colourless stones with a strong blue fluorescence are produced by the Jagersfontein Mine in South Africa. The stones from these mines have the nicknames “Premiers” and “Jagers”.

Fossils Searching for fossils with a UV-A(365nm) lamp gives the result that especially for very small tooth and eggshell fragments searching at night with UV-A(365nm) light can result in considerably more specimens than searching during the day using standard collecting techniques. Bone fragments also light up under UV-A(365nm)

Petroleum contaminated soil examination UV-A(365nm) light can help in the examination of petroleum contaminated soil and sediments. The visible fluorescence of many petroleum products under UV-A(365nm) light often provides a striking contrast to surrounding, uncontaminated areas. This contrast can be used in a variety of applications, including delineating the extent of petroleum in excavations, locating contaminants along shorelines, and selecting sample intervals in sediment cores.

28. Collectors

For collectors of stones, stamps, value documents, uranium glass or other diverse subjects it can be very interesting to observe a collection from a different perspective.

29. Pest Controllers

When a Rat or Mouse invades a kitchen, restaurant, food store or food processing plant, it is important to immediately find out where they are and the route they take to find food and shelter. The bigger the company, the harder it is to find all the hiding places and routes in the building.

Rodents are smart, agile and small, making it easy for them to get into places people can’t reach or don’t even think to check. They can climb along cables, cords, pipes and tubing and squeeze through small cracks and holes. They also gnaw holes in very many materials to gain access to buildings and hidden places. Why are rodent inspections so important?

The first step in controlling rats and mice is to inspect the infested property to find out how many there are and where they are hiding. These days, there are still many pest controllers who simply place poison or traps without a proper understanding of which areas of the property to do so in.

There are 2 ways to detect where rats and mice are

Innovative Fluorescent Tracking Gel is a specially formulated non-toxic fluorescent gel that can be applied to virtually all surfaces. The gel is applied to a surface where mice or rats are suspected. The gel does not dry out and when the rodents walk or climb over it, it sticks to their paws, belly and tail.

The rat or mouse then leaves a gel trail wherever the animal goes. The fluorescent gel glows when shined on with a UV-A(365nm) lamp, this gives a good indication of where traps or baits should be placed and helps to determine the correct methods of control and repulsion.

There are also special food cubes for rats / mice in these cubes is a fluorescent agent which eat the rats / mice then it is used the incontinence of rats / mice after eating the special food cubes they leave traces everywhere which are clearly visible under UV-A (365nm) light.

In this way, it can be determined where traps or feeding stations can best be placed.

Bed bugs

Bed bugs are considered parasites and can pose a health risk to many. Once you discover that your home is infested with bed bugs, the next crucial step is to identify their habitat to effectively eliminate them.

Because bed bugs hate light, it is difficult to find them during the day. Can you see bed bugs with UV-A(365nm) light? Well, with a UV-A lamp you can’t spot a bed bug directly, but a UV-A(365nm) lamp can be used to find their trail.

Try the following steps when using a UV-A(365nm) lamp to find traces of bed bugs:

If you remove your bedding, you will see the marks left by bed bugs.

If you want to find bed bugs with a UV-A(365nm) light, turn it on and check the corner seams of your mattress.

Follow the light across the seam until you see the glowing trace. Bed bugs leave a trail of blood and droppings. Follow this trail until you find the end.

If the bugs are not in the corner seams of the bed, they may be in the nearest wall seam or outlet. Suffocation and heat are the best ways to eradicate bed bugs once you find them.

30. Riboflavin wash cycle validation

UV-A(365nm) is used in combination with an aqueous solution of riboflavin to validate the wash sequence of containment isolators used to dose toxic/active products.

31. Hunting

UV-A(365nm) light can be used during hunting, a blood trail can easily be followed with a UV-A(365nm) lamp. Blood under UV-A(365nm) light is much darker than its surroundings and therefore a blood trail can easily be followed. Sweat can also be found, as it fluoridates under UV-A(365nm) light. Mushrooms This might not be so much a hunt as a search, but there are bioluminescent mushrooms that can easily be found with a UV-A(365nm) lamp.

32. Entomology

There are species of insects that light up under UV-A(365 nm). So an entomologist can use a UV-A(365nm) lamp in his research on insects.
A well known example of this are scorpions, certain species of scorpions light up under UV-A(365nm) light.

Intro

This article was compiled by Firstelementsstore.com to create as complete an overview as possible for the possible uses of a UV-A torch.
We have done our best to gather as much information as possible on this subject and put it together.
This piece is intended to inform and inspire you in the field of UV-A(365nm) technology.

Content

Do you have questions about this article or other applications for UV-A light?
Would you like to share knowledge with us to improve this article?
Or do you have any criticism of this article?
In all cases, please contact us. You can contact us via our contact page.

Firstelementsstore.com Your specialist in UV-C and UV-A technology

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Looking for a professional real UV-A flashlight? POWERLIGHT flashlights offer an unprecedented UV-A(365nm) light output!

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More cost-effective

Spare parts are cheaper than buying new ones, which saves you money!

Repair is better for the environment.

Instead of producing a new product (and therefore throwing away the unit to be replaced), it is better to replace only the part that has failed. Repairing can save resources. And there will also be savings on transport

Alcochem Hygiene appliances are constructed in such a way that replacement of a component is often easy. Replacing a defective part is therefore better for your wallet and better for the environment (Please observe the safety regulations when repairing)

Are you looking for a spare part for your product purchased on firstelementsstore.com. We can supply you with almost all parts. Just send us an email asking us which part you are looking for and we will be happy to sort it out for you.

See also the link (Dutch) to: conscious shopping, in which this is emphasised once again:

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What you do not want

No insect traps with a high-voltage grid may be placed in rooms where food is prepared, stored, or consumed. This is partly because the captured and killed insects can fall out. Also, the high voltage, which leads to electrocution of the insect, can cause them to disintegrate into particles.

Insects, or parts of insects, can still end up in food, leading to unhygienic situations. Also, this way diseases that an insect may carry can still be spread.

What then?

An insect trap with an adhesive sheet is suitable for this purpose. The insect is attracted by the UV-A lamp and is then lured into the trap. When the insect enters the trap, it lands on an adhesive sheet. The insect then remains stuck on this adhesive sheet.

Thus, the insect is caught in the trap without being able to get out. Polluting other surfaces, spreading diseases, or sitting on food is no longer possible. This makes an insect trap with adhesive sheet the best solution for the catering industry.

Unlike humans, most flying insects can see ultraviolet light, thanks to the complex composition of their eyes. However, there are exceptions!

Insects, such as the house fly, are attracted to light. This behaviour is called positive phototactic. Ultraviolet light mainly attracts flies, beetles and moths. They navigate using the UV light from the sun and the moon. The UV light, which comes from the light trap, confuses them.

Mosquitoes, at least the females, who are the only ones to bite humans, are attracted by heat and carbon dioxide in particular. The male lives off nectar and will never bite. This insect species do not or hardly react to light sources and are therefore not positively phototactic.

Female mosquitoes search the environment for blood:

Warmth

A warm body to take a blood meal from. These warm-blooded people and animals do not emit ultraviolet light, but infrared radiation.

Carbon dioxide

Whether humans, dogs, horses, or birds: all living blood sources give off carbon dioxide.

Female mosquitoes, like most biting insects, can concentrate on the smell of carbon dioxide in the air.

Research shows that a bloodthirsty mosquito can detect carbon dioxide up to 35 meters away from its source. At the slightest scent of CO₂, the mosquito will fly in a zigzag motion, using trial and error to locate the person or animal nearby. Carbon dioxide is the most powerful attractant for female mosquitoes.

sents and water vapor

But water vapor in your breath also attracts them. Female mosquitoes also use other scent trails to find people they can bite. Perfume, sweat, and even body odor can also attract mosquitoes.

Therefore, traps specially designed to attract female mosquitoes use heat and carbon dioxide to attract them.

To sum up:

Female mosquitoes are drawn to the carbon dioxide in the breath of humans and animals and to their body heat, not to ultraviolet light.

There is no doubt that your insect trap catches a lot of insects and that many of the insects you find in your trap look like mosquitoes. However, these are usually not mosquitoes, but midges.

Research shows that non-biting midges, which are very similar to their mosquito cousins, are strongly attracted to UV-A light and can be caught in large numbers in your insect trap. For most people, it is difficult to distinguish between midges and mosquitoes, which is why there is some confusion.

And some manufacturers cleverly use (read: abuse) this to recommend their equipment for mosquito control.

If you are bothered by biting mosquitoes, a UV-A light trap is no solution!

Links: .

image : https://www.hibetta.com/key-differences-between-midges-and-mosquitoes/

info: https://www.sciencedaily.com/releases/1997/07/970730060806.htm

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