Profile: Index Instruments Ltd. is a producer of refractometers. We specialize in the field of scientific instrumentation. We design, assemble, calibrate and test all our insturments. Some of the types of refractometers we have are listed as visual hand held refractometers, digital hand held refractometers, general purpose refractometers, peltier controlled refractometers, high temperature refractometers and special purpose refractometers. Our digital hand held refractometers consists of features like automatic shut off, full automatic temperature compensation, dual temperature reading and multi-scale versions. On the other side our GPR 12-70E refractometer comprises of properties like robust construction, operating modes selection, set-up functions protection, recording option for instrument serial number & sample number and a barcode reader. This instrument can also be integrated into automatic systems.