GEM Gemstone Refractometer Refractive Index Fluid 1.81nD 15 Gram Vial CHECKER Metalworking Fluids: Help maintain your

Metalworking Fluids: Help maintain your coolant levels to improve finishes

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While newer models offer expanded features and improved ergonomics

442 Refractive Index Calibration Fluid

GEM Gemstone Refractometer Refractive Index Fluid 1.81nD 15 Gram Vial CHECKER Metalworking Fluids: Help maintain yourItem Description: 3. 6ml of 1. 81 Refractive Index for Gem Refractometers, American Made, ARSENIC FREE! 50% MORE THAN THE 10 GRAM VIAL! THE LARGEST SIZE AVAILABLE ANYWHERE! THIS IS THE BEST FLUID AVAILABLE FOR GEM REFRACTOMETERS! This product is the non poisonous version of the classic Gem Refractive Index Fluid; Diiodomethane (methylene iodide). The most important aspect of the Refractometer is the quality of the fluid and its Refractive Index. This