CLEARANCE SPECIAL: SALE $89 (while supplies last). The Acustrip DCR500 can measure both Ethylene and Propylene based coolant/antifreeze mixtures very accurately. According to ASTM Method 3321 Standard Practice for the Use of Determining the Freezing point of Aqueous Engine coolants, the Duo-Chek refractometer is accurate to a level of +/- 1%. The Acustrip DCR500 duo refractometer is the perfect companion to the use of Acustrip test strips.
Product color is black.
Please Note: Always use the instructions and color charts packaged with the product. Do not rely on your computer screen or printer to accurately render colors from charts provided online.