Digital Invert Sugar Refractometer


MA881 Digital Refractometer for Invert Sugar Measurements

The MA881 is an optical instrument that employs the measurement of refractive index to determine the % Invert Sugar in aqueous solutions. The method is both simple and quick.
Samples are measured after a simple user calibration with steam distilled water (starter bottle provided with your unit).

Within seconds the instrument measures the refractive index of the sample and converts it to % by weight concentration units. The MA881 digital refractometer eliminates the uncertainity associated with mechanical refractometers and is easily portable for measurements in the field.

The measurement technique and temperature compensation employ methodology recommended in the ICUMSA Methods Book (Internationally recognized body for Sugar Analysis).
Temperature (in °C or °F) is displayed simultaneously with the measurement on the large dual level display along with icons for Low Power and other helpful message codes.

Key features include:
• Dual-level LCD
• Automatic Temperature Compensation (ATC)
• Easy setup and storage
• Battery operation with Low Power indicator (BEPS)
• Automatically turns off after 3 minutes of non-use.

Conductivity readings are performed by applying an alternate current to the 4-ring probe which creates a variable voltage depending on the conductivity.

Includes 9V Battery & Instruction

Range: 0 to 85%

0 to 80°C / 32 to 175°F



0.1°C / 0.1°F

Accuracy: ±0.2%

±0.3°C / ±0.5°F

Light Source: Yellow LED

Measurements Time: Approximately 1.5 seconds

Minimum Sample Volume: 100 µL (cover prism totally)

Sample Cell: SS ring and flint glass prism

Temperature Compensation: Automatic between 10 and 40°C / 50 to 104°F

Case Material: ABS

Enclosure Rating: IP 65

Battery Type: 1 x 9V AA (included)

Battery Life: 5000 reading

Auto-shut off: after 3 minutes of non-use

Dimensions: 192 x 102 x 67 mm

Weight: 420 g

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