Our Digital Gem Refractometer is a nice optical instrument which will give a reading of the refractive index of a clean, flat, well-polished facet to reproducibility of 0.007RI index units. With covering the full range from 1.30 to 2.99RI, It is an ideal instrument to identify the gem stones. The importance is that it can test the gem stones without requiring ANY messy, damaging contact oil. RI Test Range:1.30 to 2.99RI Power Input: 9V Battery Work Tempreature: 25-28’C

Compared with the traditional handheld refractometers, the digital refractometers have the digital readout and the LED display. only a small amount of sample is needed to test.We have many types of digital refractometers for you to choose from.write to me the type you want!

Our Digital Abbe Refractometer is widely used to determine the refractive index and mean dispersion of transparent liquids and solids. It is also designed for determine sugar content in aqueous solut

The digital brix refractometers are highly accurate and precise optical instruments. These digital refratometers use latest and precise optical cells. These refractomers use digital picture process

The digital clinical refractomers, which are ideally used for urine and serum protein analysis are extremely accurate and precise optical instruments. These digital clinical refratometers use latest

The Digital Gem Refractometer is a good optical instrument which will give a reading of the refractive index of a clean, flat, well-polished facet to reproducibility of 0.007RI index units. With cove

The digital salinity refractometers are highly accurate and precise optical instruments. These digital refractometers use latest and precise optical cells. Advanced microprocessor is centre of the di