UV-transparent fused silica sheets for pesticide analysis laboratories-Mia

UV-transparent fused silica sheets for pesticide analysis laboratories

One customer engaged in pesticide photodegradation testing and UV stability evaluation previously used conventional borosilicate glass sheets. Poor deep UV transmittance led to uneven light exposure on test samples, inconsistent photodegradation rates and high background noise during UV absorbance measurement. When they increased UV irradiation intensity to compensate for light loss, the glass generated obvious autofluorescence, distorted detection signals and made it difficult to obtain reliable comparative test data. The laboratory could not carry out accurate photostability screening of pesticide formulations as scheduled.

The customer turned to customized JGS1 fused silica sheets from Shengfan Quartz. Made of high-purity fused silica with excellent deep UV transmission performance, the sheets deliver stable UVC transmittance above 90% at 254 nm and maintain consistent optical performance under long-term continuous UV irradiation. They feature outstanding chemical inertness, low autofluorescence and no ion leaching, avoiding interference with trace organic sample testing.

Our team controlled flatness, surface scratch quality and dimensional tolerance strictly during processing. Both sides were finely polished to eliminate subsurface damage, meeting the optical window requirements of their photoreactors. After installation, the test chamber achieved uniform light field distribution. The quartz sheets remained optically stable without fogging or light attenuation after dozens of long-cycle photodegradation tests, reducing repeated experimental retests.

For conventional visible-light observation tests, borosilicate glass sheets are economical and sufficient. But for deep UV photodegradation, photostability testing and fluorescence detection, high-transmittance fused silica quartz sheets show obvious advantages. Though the initial purchase cost is higher, they bring reliable, repeatable experimental data and lower comprehensive testing cost.

Shengfan Quartz can fabricate custom quartz sheets with specified size, thickness, polishing grade and edge treatment. We support trial sampling and bulk export orders for agrochemical labs, environmental research institutions, pharmaceutical R&D and university laboratories. Our engineers can provide optical specification suggestions according to target wavelength, light source type and sample medium.