• Advance Research Instruments Company

Abbe Refractometers

Advanced research instruments company offers Advance Abbe Refractometers, R-8. Main Features: Single eye-piece for reading the scale & viewing the demarcation shadow; Completely sealed optics for operation in tropical regions and extreme operating conditions; Dual graduations of refractive index & brix percentage; Measurement of of dispersion; Horizontal prism for easy application of test samples; Water jacketed prism box which can be connected to circulating water bath for temperature maintenance; Compensator to compensate for dispersion in the medium under test; & Compact lighting system for both prism box & scale illumination. This is a handy measuring instrument. The measuring Prism is rigid and the surface to take the substances to be measured is horizontal which prevents flowing down of the test liquid of the prism is one of the new features of this refractometer. The Prism box is made of Stainless Steel and as such highly corrosive material can be tested without damaging the Prism Box. Focusing of the boundary line of total reflection is effected on the same field of view in which the reading is taken. Setting and Reading operation in the same-Eye-Piece makes the work of the operator easy and efficient. The graduated Arc Scale made of glass lies well protected inside of the instrument with all other Optics. The compact design of the basic equipment facilitated the construction of a casing which, while permitting full utilisation of its optical properties, afforded reliable and robust protection of all delicate parts against potential mechanical, thermal of chemical damage. Highly coloured samples and plastic Substances are measured in reflected light is another one of the many new features introduced indigenously for the first time. In order to maintain a constant temperature for more accurate measurements, the Prism mounts of the Refractometer are equipped for circulation of water at constant temperature when connected to a Thermostatically Controlled Circulating bath. Specifications: Measuring Range, Refractive Index: nD1.3000 to 1.7100; Measuring Range, Sugar: 0 to 95%; Measuring Accuracy, Refractive Index: nD 0.001 (direct reading) & 0.0001 (by estimation); Measuring Accuracy, Sugar: 0.5% by direct reading and 0.1 % by estimation. Dimension: 170mm X 120mm X 210mm. This has the advantage of operating on either Transmitted light or Reflected light depending on user convenience. This is especially useful when dark or solid samples have to be accurately measured. Though an artificial light source is preferred for accurate measurements the instrument can also be used with natural light.