MISCO eMaple (Model #PA202X) Digital Hand-Held Refractometer. The eMaple Digital Maple Syrup Refractometer can be used at the tree tap or tank to measure maple sap, for pre-process monitoring of reverse osmosis, in the sugar shack to determine when to draw maple syrup from the boiler, or during maple syrup bottling and testing. The eMaple Refractometer measures from 0 to 85 Brix, features two scales ("Syrup <86 degrees F" 0 to 85 Brix/Resolution 0.1/Precision +/- 0.1 and "Syrup >86 degrees F" 0 to 85 Brix/Resolution 1/Precision +/- 0.5), a stainless steel sample well, an evaporation cover, a 1,024 element measuring array, and 24-character text display. Please refer to our refund policy prior to purchase.