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The SCHMIDT + HAENSCH ABBE refractometer AR12 is a classical, visual refractometer, named after ist inventor Ernst Abbé and designed for the determination of the refractive index of liquid media with high or low viscosity. It is used in the fast control of liquids and the “in-field analysis“.
The ABBE refractometer AR12 is equipped with hose connections at the prism unit for the thermostatisation of the optical parts. The temperature is measured with a digital thermometer. The measuring principle is based on the law of Snellius (law of refractive index) and is able to measure with transmitted or totally reflected light. With a contact fluid even solids can be measured with the ABBE refractometer.
Optional an illumination unit is available for prism and scale illumination with a LED.
| Measuring scales | Refractive Index (RI) Sucrose (%Brix) |
| Measuring range | 1,3000 – 1,7000 RI / 0 – 95 %Brix |
| Resolution | 0,0002 RI / 0,1 %Brix |
| Precision | ± 0,0002 RI / ± 0,1 %Brix |
| Reproducibility | 0,0002 RI / 0,1 %Brix |
| Measurement mode | Single sample |
| Ambient temperature | +10 - +40 °C |
| Temperature measurement | external digital thermometer |
| Temperature control sample | by external water bath |
| Temperature control range | on request |
| Temperature resolution | depends on the external water bath |
| Temperature precision | depends on the external water bath |
| Temperature reproducibility | depends on the external water bath |
| Temperature compensation Brix | with external calculation |
| Prism | Glass |
| Light source/wavelength | daylight or optional LED with 590 nm |
| Display | no display, visual instrument |
| Standards | ASTM AOAC, DIN, others |
