Portable Digital Refractometers PDR PDR-F Series
Model PDR-35 PDR-45 PDR-85 PDR-92 PDR- HN1 PDR-HN2 PDR-A1 PDR-S1 PDR-R1 PDR-R2 PDR-R3 PDR-L1 PDR-L2 PDR- FWN1 PDR-FWN2 PDR-FWN3 PDR-FK1 PDR-FC1 PDR-FC2It is an instrument that uses light to test the concentration of liquids or the refractive index of solids. It is mainly used to determine physical constants such as the refractive index, birefringence and optical pro…