Sino Science& Technology Co.Ltd.

Compared with the traditional handheld refractometers, the digital refractometers have the digital readout and the LED display. only a small amount of

You can have more choices in SinoTech! SinoTech is a professional manufacturer of refractometers for more than a decade. The greatest advantage of our

132-01-730 metric inch accuracy resolution Order number range Order NO. range ZX01730 0-25mm ZX01731 0-1C 0.004mm 0.001mm ZX02730 25-50mm ZX02

Polariscopes are used to quickly and easily check if gemstones are single or double refracting. It Is very useful in identifying Moissanite and detect

The models have only one unit system: C. With the indication of the percentage we may know the freezing point of either ethylene glycol or propylene g

Gemological instrument is professionally designed for testing or identifying the gemstone. It is a good instrument to the professional practitioner or

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

The kinds of gem can be precisely determined in accordance with the measured value of refractive index because every kind of gem has its inherent refr