Model: | - |
---|---|
Brand: | - |
Origin: | Made In China |
Category: | Chemicals / Inorganic Chemical Materials / Inorganic Salt |
Label: | sodium percarbonate , chemical , sodium percarbonate |
Price: |
US $470
/ ton
|
Min. Order: | 24 ton |
Last Online:27 Feb, 2015 |
Gemmological refractometer id a precision instrument which is used for precisely measuring Jeselary. Gem has inherent refractive and double refraction. From the parameter. you can judge whether gem is uniaxial or biaxial photoneeqative.
Refractive Index:1.30-1.81
Monimum Scale: 0.01
Size: 3X3X13 cm
NW:400g