OPTi Digital Hand Held Refractometers

The use of a hand refractometer facilitates convenient and rapid measurement of concentration in a number of liquid and semi-solid samples. Food applications include the measurement of sugar in grape must and other fresh fruit, processed food, sugar solutions and beverages. Starch, honey and salt solutions may also be measured.

Hand held refractometers are also commonly used to control blend ratios of various industrial liquids. Chemical blends such as glycols, battery acid, heat exchange fluids, automotive antifreeze, aviation wing de-icing chemicals and jet fuel ice inhibitors can be controlled easily whilst measurement of industrial fluids such as coolants, quenchants and hydraulic oils are commonplace.

We offer a complete choice of hand held refractometers that provide not only the most accurate performance in it’s class but also repeatability when switching between users.

We offer OPTi's in the following application specific pages:

- Food & Beverage models

- Life Science models

- Industrial, Automotive and Heat Transfer fluids models

- Full Brix range and equivalents


Measurement Performance

Automatic Temperature Compensation (ATC) ICUMSA, None or Application Specific (model dependent)
Working temperature range 5-40°C
Sample temperature range 5-90°C
Temperature sensor accuracy ±1°C (5–40°C)
Measurement time 2 seconds
Relative humidity 95% RH (non condensing)
Battery power indicator Yes
Sample indicator High, Low or No sample
IP rating IP65 water resistant
Battery type 3V 2 x AAA (LR03)
Battery life expectation 10000 readings (minimum)


Physical Performance
Prism material Optical glass
Prism seal Silicon rubber and Viton
Sample dish 316 stainless steel
Sample surface diameter 8mm
Sample volume 0.3ml
Case material Acrylonitrile Butadiene Styrene (ABS)