Product Details

Brief Introduction

Gem Digital Refractometer is for measuring the gem refractive index of an unknown gem stones, it is covering the full range from 1.40 to 3.00. It gives a quick and reliable differentiation of diamonds and imitations colored stones from their many imitations.

$DG-501 Gem Digital Refractometer auto refractometer price$ $DG-501 Gem Digital Refractometer auto refractometer price$

If the instrument has been subjected to rough handling in shipment , or if your environments is very different in temperature,calibration adjustment may require.

1. Turn on the “ ON” button

2. Press “TEST” button until the “CAL” appears

3. When the screen display “1.487”, place scale sample (1.487) on test platform, then press test button; now the screen display “1.806”, place scale sample (1.806) on the test platform, then press test button again.

4. When the screen display “END”, the calibration is finished.

$DG-501 Gem Digital Refractometer auto refractometer price$

Technical parameters

Test Range: 1.400~2.000

Power Input: 9V Battery

Working Temperature: 10~28 Degree

$DG-501 Gem Digital Refractometer auto refractometer price$

Dear customer,

We ,Xi’an Yima Opto-electrical Technology Com.,Ltd. is an integrated economic entity of R&D,manufacturing and trading with over 20 years of history .

Our business scope covers various fields such as biochemical analysis,environmental protection,industrial testing, bioscience,medical apparatus and instruments,internet technology and some frontier science.

Through a long-time development,we own a national resources system of various professional talents , abundant supply for various components &parts and special materials, full producing &processing equipments , strong Technological standardization and a complete quality assurance system.

If you need OEM or ODM in manufacturing ,scientific research , market development and or you want to build your own brand in your country, it’s our honor to cooperate with you.In this way ,we have developed many products for our customers from the USA, Europe and South Africa and got good feedback on Alibaba

We firmly believe that science and technology is no boundaries

Our mission is to make every effort to contribute to all humanity.