J157-633 is designed for measurement of materials to be used in Optical Waveguide Lightmode Spectroscopy (OWLS) systems. It has all the same functions as the standard J157 automatic refractometer, but works at 633nm instead of the standard 589nm.
Specification
Temperature Range:15C to 50C Refractive Index Range:1.26 - 1.70 RI Measuring Time:20 Seconds Refractive Index Range:1.33 - 1.53 RI Resolution:0.00001 RI / 0.01 Brix Brix Range:0 - 95 Brix Optical Wavelength:633 nm
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J157 Bench Automatic Refractometer for Food QA and R&D, J357 High Performance Automatic Refractometer, J457 Automatic Refractometer, J57HA Automatic Refractometer for Food Quality Testing