Koehler K27580 Automatic Petroleum Refractometer w/ Touch Screen

Specification of

Test Method

Refractive Index is a fundamental physical property that is used in conjunction with other properties to characterize pure hydrocarbons and their mixtures. It is a useful property for concentration measurements, purity determinations and chemical identification. 

Specifications

Conforms to the Specifications of: 

ASTM D1218, D1747, D5006, D5775

Measurement Scales: Refractive Index (RI), BRIX (% sucrose), Temperature Corrected RI, Temperature Corrected BRIX, Ten User-Programmable Scales

Illumination: 589nm light emitting diode with interference filter (estimated life: 100,000 hrs)

Range: Dissolved Solids: 0 to 95% solids

Refractive Index: 1.26000 to 1.72000nD (nD - Sodium D-Line Refractive Index)

Readability: 0.01% Solids 0.00001nD

Precision: Refractive Index Standard Oils ± 0.00002 - Typical clear aqueous samples, % Solids Temperature Compensated, as sucrose ±0.02%

Calibration Fluid: refractive index standard oil, NIST traceable nominal value 1.495 RI, 67.61 BRIX

Sample Types: Transparent, translucent or opaque

Prism Assembly: Stainless steel, synthetic sapphire sealed with solvent-resistant epoxy

Calibration: 1 point - Water only;  2 point - Water and refractive index or Brix standard