The condition of your material will determine which type of UV lamp you should use. All lamps primarily emit ultraviolet light rather than visible or infrared light. The power of the UV lamp is equivalent to that of an ordinary 40-watt fluorescent lamp. However, each different type of lamp emits a different total UV energy and a different spectral distribution. UV lamps can generally be divided into UVA and UVB, depending mainly on the region where most of the output spectrum is located.
UVA light
UVA lamps are particularly suitable for comparative testing of different types of polymers because UVA lamps do not contain any ultra-short UV light below the 295 nm daylight cut-off point. Compared with UVB lamps, it has a slower damaging effect on materials. However, it correlated better with outdoor exposure results.
UVA-340
The UVA-340 simulates well the critical short-wave UV region of sunlight from 365nm to the 295nm cut-off point. It peaks at 340nm. UVA-340 is especially suitable for comparative testing of different compositions.
UVA-351
UVA-351 simulates the ultraviolet portion of sunlight passing through window glass. It is suitable for indoor products such as aging tests of certain inks and polymer materials placed near windows.
UVB lamp
UVB lamps emit the shortest wavelengths of sunlight available on the Earth's surface. Therefore, fluorescent UVB lamps are widely used in QC and R&D departments for faster and more efficient testing. Since all UVB lamps emit unnaturally short UV wavelengths below the solar load point of 295nm, results may vary from reality. We can offer two types of UVB lamps with different exposure levels but producing the same UV wavelength waveform.
UVB-313EL
UVB-313EL is more suitable for QC and R&D applications and durable material testing.
The UVB-313EL emits higher UV output for faster test results and is also very stable.
UVB-313EL is a substitute of UVB-313, which can provide higher output stability. Especially suitable for comparative testing of different formulations.
UVA-340 is recommended for most related tests on plastics, textiles, coatings, pigments and UV stabilizers. Good for comparing results from outdoor exposure
UVB-313EL is suitable for quality control and research and development applications, and is recommended for some durable materials, such as roofing materials and some outdoor coatings, etc.
UVA-351 is recommended for some automotive interior parts, textiles and inks
