$159.99 GR-100, 0-100% Glycerin Water Refractometer Sprinkler Antifreeze NFPA 13

NI Supply GR-100 Portable 0-100% w/w Glycerin Refractometer THIS IS THE BEST PRICE IN THE WORLD FOR A  GLYCERIN IN WATER REFRACTOMETER   New Fire sprinkler laws (NFPA 13) got you worried?  Worry no more!  You've found the unit to test the concentrations of Glycerin in Water and determine your pipes FREEZE POINT! This is the Refractometer the Professionals use! The User's Guide that comes with the unit will show you the Freeze Point of Glycerin and Water Solutions in 'F and 'C!  Consult your products MSDS/Technical Datasheet for product specific protocols for measuring their brand of Glycerin based Antifreeze.   GR-100 Specs: * Scale Range: 0%-100.0% Percent Glycerin in Water* Resolution: 0.5%* Accuracy: +/- 1.00% * Dimensions: 28mm x 28mm x 155mm* Weight: 138 grams/5.5 ounces Included are: A plastic hard case, calibration screwdriver, pipette and User's Guide.   This unit is nearly $400 LESS than other glycerin refractometers on the market!   One BRAND NEW NI Supply GR-100 (0% to 1