VEE GEE Scientific 45000-OS025 Refractometer Standard with Letter of NIST Traceable Certification, 60 Brix

Like any analytical instrument, refractometer's must be checked against standard materials and recalibrated when necessary. To calibrate Abbe hand held refractometer's, select a test glass as close to your samples refractive index as possible. Then select the appropriate contact solution. Use 8045D04 and 8045D06 test glasses with 8045D02 contact solution and 8045D10 and 8045D12 test glasses with 8045D08 contact solution. Place a drop of contact solution on the primary prism and lay the test glass on top. Measure the nD value and adjust calibration, if necessary, according to the manufactures instructions.

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• Country of origin: United States