1.800 Refractive Index Fluid Gem Gemstone Refractometer 3.6ml Vial HI83399-01 calibration must be performed each

calibration must be performed each day before any samples are measured and re-calibrated every couple of hours to ensure that correct slope is used to calculate the sample pH

BRAND NEW Atago PEN-PRO (0% to 85% Brix Scale) Hand held Digital Refractometer in a Gray

or any list of markings can be used to determine mineral oil percentage

IF YOU PURCHASED A LED REFRACTOMETER WITH THIS PART ON IT FROM NI SUPPLY IN THE LAST 3 YEARS

Scale 3 Fluid: Wine (Must Sugar Content)

1.800 Refractive Index Fluid Gem Gemstone Refractometer 3.6ml Vial HI83399-01 calibration must be performed eachItem Description: 3. 6ml Vial of 1. 800 Refractive Index Fluid for Gem Refractometers, 19 Grams (3. 6ml) THIS PRODUCT DOES NOT CONTAIN ARSENIC AND IS NON POISONOUS. CAN YOU SAY THAT ABOUT THE OTHER STUFF ONLINE? THIS GEM REFRACTIVE INDEX FLUID IS AMERICAN MADE, SO YOU KNOW IT'S ACCURATE! WE OFFER THE LARGEST SIZE AVAILABLE ANYWHERE! OUR 3. 6ml VIAL WEIGHS 19 GRAMS! Specifications (DO THE OTHER GUYS DO THIS?): Refractive Index @ 25'C: nD = 1. 800 + 0.