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Gem Refractometer / Gemological Refractometer
Gem Refractometer / Gemological Refractometer
Model NO.: RHG-xxx
Trademark: total
Product Description

Hongkong and Shanghai Total Co., Ltd. is specialized in producing and exporting Measurement & Meter, anemometer, dew point meter, dewpoint meter, portable dewpoint meter,and so on.

Refractive index is one of most important optical parameter. Gloss of gem can be estimated by the parameter.

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 refractive. Besides, index of double refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.

The gemological refractometer is characterized by small volume and less weight. It is easy to carry. It is a popular instrument used in jewelry market.

Product Specification
Model Range Min.Div.
RHG-181  Refractive Index: 1.30-1.81  Refractive Index: 0.01  
RHG-185 Refractive Index: 1.35-1.85 Refractive Index: 0.002

Product Name:RHG600
Product Explains
  This model is Gemological refractometer. It can be used for measuring Refractive index of Gemstone or Ore. The index of double refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
Scale range:1.30-1.81 RI
Minimum Division: 0.01RI










Product Name:RHG700
Product Explains
  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 refractive index. Besides, index of double of refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
The gemological refractometer is characterized by small volume and less weight. It is easy to carry. It is popular instrument used on jewelry market. The model RHG-700 is equipped with a built-in light source . It is more convenient to test!
Specification:
Range: 1.30-1.81RI
Minimum Division: 0.01
 

















Product Name:RHG800
Product Explains
  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 refractive index. Besides, index of double of refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
RHG800 is characterized by small volume and less weight. It is easy to carry. It is popular instrument used on jewelry market
RHG-800 is equipped with torch .
Specification:
Range: 1.30-1.81RI
Minimum Division: 0.01
Accuracy: ±0.02
Size: 115 x 35 x 63mm
 




Product Name:RHG900
Product Explains
  This model can be precisely determined in accordance with the measured value of refractive index because every kind of gem has its inherent refractive index. Besides, index of double of refraction can be also measured. Through the parameter you can judge whether a gem is uniaxial or biaxial photopositive or photonegative.
The gemological refractometer is characterized by small volume and less weight. It is easy to carry. It is popular instrument used on jewelry market. This RHG-900 is a professional model for issuing the certificate for gemstones. It is most popular used om labs and jewellery insitutes. Our RHG-900 is the first choice for issuing certificates for gemstones!

Specification:
Range: 1.30-1.81RI
Minimum Division: 0.01 RI
Accuracy: ±0.02 RI


Product Name:Digital Gem Refrectometer DGR800
Product Explains
  The 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.
Specification:
RI Test Range:1.30 to 2.99RI
Power Input: 9V Battery
Work Tempreature: 25-28’C
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