53.0 mS Calibration/Reference Fluid 2 fl oz
Save Your Money
Order this item with new Refractometer. Following instructions on Refractometer it states to us Distilled water to set up unit, which I did. When running secondary test with 53.0 mS Calibration/Reference found unit was off or solution was not corrected. Ran second and third test's and decided that it was solution. Most Refractometer will tell you to use distilled water, save your money don't buy this product, most you can pay for best distill water anywhere is dollar.
Wish I could get my money back butr it cost more to ship a product back then you paid for it....
November 29, 2012