Abbe 5 Refractometer

The Abbe 5 is an affordable refractometer ideally suited for use where a wide refractive index measurement range is required such as in small contract laboratories or applications where sample throughput is relatively low. The instrument is also ideal for practical demonstrations and experiments in chemistry and physics laboratories of schools, colleges and universities.

The instrument is simple to use and requires no external power source.

OPERATION:
The sample is placed on the prism and is illuminated by aligning the chrome-plated reflector with a suitable light source (day light or desk lamp – not provided). Adjustment of the Achromatising prisms provides a means of ensuring the reading is obtained at the correct frequency (589nm for standard measurement). The borderline may then be observed through the single eyepiece and the reading in either Refractive Index or Brix scales may be taken from the integral scale.

The instrument may be configured to work in either the traditional ‘transmitted mode’ or for non-homogenous or opaque samples, ‘reflected mode’ may be chosen. Dispersion measurements of hydrocarbons or solids materials such as glass, contact lenses and fibre optics may be made in accordance with standard practice.

Waterbath connections provide prism temperature control, with the prism temperature being monitored electronically and displayed on the integral digital display as Centigrade or Fahrenheit (factory set option). With good temperature control and precise calibration, readings may be obtained to 4 decimal places RI or 1 decimal Brix.

The Abbe 5 refractometer is supplied with a glass calibration plate, contact liquid, and instruction manual and is packed in a hard flight case for easy transportation and storage. Limited warranty is 24-months.

Specifications
Range	1.30 - 1.70 RI	0 – 95 °Brix
Resolution	0.0005	0.25 °Brix
Operating Temperature	5 – 70 °C
Temperature Resolution	0.1°C
Temperature Accuracy	±1 °C
Storage/Ambient Temperature	5 – 40 °C
Power Source	1 x AA alkaline 1.5V dry cell. Approx. life 12-months continuous usage

Order code	Description
44-501C	Abbe 5 refractometer supplied with glass calibration plate, contact liquid and instruction manual packed in a hard flight case for easy storage. Temperature display in °C (Centigrade).
44-501F	Abbe 5 refractometer supplied with glass calibration plate, contact liquid and instruction manual packed in a hard flight case for easy storage. Temperature display in °F (Fahrenheit).
44-590	Spare prism box assembly.
72-200	Traceable calibration plate (silica: 1.45839 ± 0.0001 RI at 20 °C).
10-43	Contact liquid (monobromonapthalene) for test plates and solid samples with an RI up to 1.65 RI. Quantity 6ml.
10-61	Contact liquid (methyl iodide) for test plates and solid samples with an RI up to 1.74 RI. Quantity 6ml.

Bellingham & Stanley Ltd pursue a policy of continuous product development and improvement, and as such, information given on this Data Sheet may be updated or withdrawn without notice.