Industrial Technologies

division of BIOLAB 

  Bellingham + Stanley Ltd- Refractometers and Polarimeters

E-line Gemological Refractometers

 

 

 

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Features & Benefits

  • Low Cost

  • Lightweight

  • Made of painted durable alloy

  • Refractive index range of 1.30 to 1.81 RI

  • Supplied with a battery operated light source, polarising filter and instruction manual in a hard carry case

Refractive Index is one of the most important optical parameters used to identify and authenticate polished precious and semi-precious gemstones.

The E-Line Gemological refractometer is a low cost, lightweight measuring instrument used by jewellers and traders of gemstones to measure polished stones over a refractive index range of 1.30 to 1.81 RI. The instrument can also be used to identify whether a particular stone is Isotropic or Anistropic (uniaxial or biaxial).