1. The refractive index measurement range of the Abbe Refractometer Verification Device is 1.47 to 1.68, calibrated using QK1, K9, F2, and ZF2 Abbe refractometer standard blocks with nominal values of approximately 1.47, 1.51, 1.61, and 1.68, respectively.

2. Calibrated by metrology authorities using the V-prism refraction method, the expanded uncertainty of refractive index (nD) measurement for the Abbe refractometer standard blocks is better than 5×10?? (k=3), and the expanded uncertainty of average dispersion (nF - nC) measurement is better than 7×10?? (k=3).

3. Three types of solutions.

4. Sodium light source lamp (optional)

Flux Technology (Nantong) Co., Ltd.Abbe Refractometer Verification Device complies with the requirements of the National Metrological Verification Regulation for Abbe Refractometers JJG625-2001 and can serve as a metrological standard for the calibration of Abbe refractometers by metrology technical institutions.