PCE Instruments Refractometer 622622 - PCE Instruments PCE-032-LED, PCE Instruments manufactures the PCE-032-LED refractometer, an optical testing device featuring LED lighting for enhanced visibility. This environmental testing tool is ideal for measuring Brix levels in various substances. Typical applications include food and beverage quality control. PCE Instruments PCE-032-LED Refractometer LED Lighting Brix Temp Comp