What is ultraviolet testing?
Ultraviolet exposure (UV testing) is performed to understand how a material will withstand the damaging effects of ultraviolet exposure, which can cause significant changes to the properties and useful life of a material.
Does UV light work through plastic?
The ability of UV-C light to penetrate materials will depend on the chemical composition of the materials. Most acrylic plastics will allow light of wavelength greater than 375 nm to pass through the material, but they will not allow UV-C wavelengths (100–290 nm) to pass through.
How do you test UV light?
Mark off a strip of the banana with duct tape, then let the light shine for 15 minutes. When you peel the tape away, you should see a clear line where the light has “tanned” the banana. If the banana skin hasn’t darkened, you probably have a fake UV-C light.
How is UV resistance measured?
The change in color can be measured by a spectrophotometer. The upholstery industry standard for UV resistance test is at least 40 hours with no color change.
How can you tell if sunglasses are UV protected?
Most sunglasses today have UV protection embedded in the lens rather than coated over it, and most reputable brands list UV protection on their label. Look for a label that says “100% protection against both UVA and UVB” or “100% protection against UV 400.”
How do you test for weathering?
UV Exposure testing uses fluorescent UV lamp weathering devices to simulate exposure to natural sunlight. This test measures the effect of ultraviolet light on the mechanical properties of a product….Other Weathering Test Methods
- Paint and Coating Testing.
- Salt Spray, Salt Fog, & Corrosion Testing.
- Sand & Dust Testing.
Does all plastic block UV?
Benefits. UV energy absorbed by plastics can excite photons, which then create free radicals. While many pure plastics cannot absorb UV radiation, the presence of catalyst residues and other impurities will often act as receptors, causing degradation.
Is UV sterilizer safe for plastic?
These UV rays can break the bonds within the plastic and cause cracking or discoloration. In fact, many bottle brands specifically recommend against using UV sterilizers on their products, as the rays can seriously decrease the durability of the bottles.
How do you test UV 400?
Look for a label that says “100% protection against both UVA and UVB” or “100% protection against UV 400.” If you’re uncertain about your sunglasses—or those fun pairs you bought online for the kids—simply take them to an optical shop where they can be tested in a photometer.
How do you protect plastic from UV rays?
To help sun proof and waterproof your above ground pool, hot tub or Jacuzzi, use 303 Aerospace Protectant on all exposed plastic, rubber, fiberglass and vinyl surfaces. This is a very cost-effective way to help maintain your water gear for years to come.
What is UV plastics testing?
The accelerated UV testing can help the manufacture determine exactly how much UV inhibitor is needed, which is important because UV inhibitors are expensive. In this case, multiple versions of the product with different amounts of inhibitor can be analyzed. Contact us today to find out about our UV Plastics Testing kits and services.
How do I order a UV test for materials?
Complete the necessary form for “ACCELERATED UV TESTING” and mark box “Attn: Materials Testing Laboratory”. 2. Include payment by check, credit card, or wire transfer.
What is accelerated UV exposure testing?
Accelerated UV exposure testing can also help pinpoint a problem with performance. For example, if the plastic product is fading fast, the company may want to add UV inhibitors. The accelerated UV testing can help the manufacture determine exactly how much UV inhibitor is needed, which is important because UV inhibitors are expensive.
What are the effects of UV light on plastics?
The effects will predominantly result in a change of the material’s surface layer – and some plastics, if damaged by UV, will ultimately lead to the component failing altogether – not good news when a project is near completion or has been finalized. When absorbed by plastics, UV energy can excite photons.