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Simply place a drop or two of urine in the stainless-steel sample well and press a button
The filling solution will be diluted and the electrode response will be slow
Refractometers have been proven time and time again to be more accurate than hydrometers or reagent test strips for testing urine
sapphire from sapphire look-alikes
Gemstone GEM Refractometer - Gemology Gemologist GIA Jorgenson Simply place a drop orRGM 700 Portable Gemological Refractometer w a 3. 6ml Vial of 1. 800RI Fluid Comes with EASY TO FOLLOW instructions! Written by our staff, not converted from another language! Comes with a Gemstone Refractive Index Chart! Comes in a black zipper case! Comes with 3. 6ml of 1. 800 Refractive Index Fluid MORE THAN ANY OTHER SELLER! Product Specs: Range: 1. 30 1. 81 Refractive Index (RI) Resolution: + 0. 01 RI Accuracy: + 0. 01 RI Dimension: 4. 5" x 1. 5"
US$ 27.65
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