Digital Brix Refractometer


MA871 Digital Brix Refractometer

The MA871 is an optical instrument that employs the measurement of refractive index to determine the % Brix of 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 % Brix concentration units.

The MA871 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.

Thousands of food and beverage professionals and hobbyists, from chefs and food quality professionals to brewers and wine makers, have moved to digital BRIX measurement from less accurate and less precise optical refractometers.


"Anyone who brews beer should find this product one of the best investments they make on any piece of equipment."

"I am in love with this instrument. No more large samples. No more phony readings from badly made refractometers."

"Dramatically improved my commercial brewing consistency & efficiency. Now I can quickly stop my sparge when I get to to my OG."

"I used this for finishing Maple Syrup. I had been trying to determine sugar content using temperature and a hydrometer. I found both very difficult to use. The refractometer was much easier."

The Milwaukee digital BRIX refractometer is temperature compensated with a 0 to 85 percent BRIX range and +/- 0.2 percent accuracy. It is easy to use with simple two button operation and fast with a response time under 2 seconds. Maintenance is a breeze also with an easy-to-clean sealed flint glass prism and stainless steel well.

Key features include:

  • Fast, accurate results with digital dual level LED readout
  • Easy measurement with just 2-3 drops of sample needed and results less than 2 seconds
  • Simple one-point calibration using distilled or deionized water
  • Easy to clean, stainless steel sample well with unit rated to IP65 as "dust tight" and protected against water jets
  • Battery percent level indicator with automatic shut-off (batteries included)
  • Ideal for winemakers, brewers, fruit and vegetable growers, maple syrup producers, and food producers


    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 Manual


    Range: 0 to 85% Brix.

    0 to 80°C / 32 to 175°F

    Resolution:  0.1% Brix

    0.1°C / 0.1°F

    Accuracy:  ±0.2% Brix

    ±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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