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This is the Abbe Rerfactometer for liquid sample measurement only.
It has the Refractive Index Scale and the BRIX scale, and it comes with D line (589nm) light source. Calibration can be done with distilled water.
Range: Refractive index (nD) : 1.3000 to 1.7000
Brix : 0.0 to 95.0%
Accuracy: Refractive index (nD) : ±0.0002
Brix: ±0.1%
Minimum Scale: Refractive Index (nD) : 0.001
Brix: 0.5%
Measurement Temp.: 5 to 50°C
Light source: LED (Approximating to wavelength of D-Line)
Dimensions & Weight: 13×18×23cm, 2.5kg (Refractometer)
10×11×7cm, 0.5kg (Thermometer)