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Koehler K27550 Automatic Petroleum Refractometer
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Last Updated
31 Oct 2019
Country Origin
United States
Minimum Order
1 unit

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

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: 1.29000 to 1.70000nD (nD - Sodium D-Line Refractive Index)

Readability:
Standard Mode: 0.1% Solids 0.0001nD
Extended Mode: 0.01% Solids 0.00001nD

Precision: Standard Mode: ±0.02% Solids ± 0.00002nD

Extended Display Mode: 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

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