The Fiber Optic Light Guide - PI is manufactured by cutting high-temperature-resistant quartz fiber to the required length and precisely polishing both ends. It retains all the superior properties of quartz fiber. Used for qualitative or quantitative analysis via UV spectrophotometry, it is widely applied in pharmaceutical testing, environmental monitoring, food inspection, and biochemical analysis. The polyimide coating offers excellent physical and chemical stability, making it ideal for immersion solution testing.