Measumax 70-670 Operation Manuals

70-670 Hand Held Brix Refractometer
The Measumax 70-670 Refractometer comes complete with an additional feature of a built in calibration ad-
justing screw. The 70-670 is fitted with a high resolution Brix scale and is developed for low concentration
readings. This range can measure the low concentration in fruit juice, soft drink, grape wine and most kinds
of beverage. It can also be used in Industry for testing of Oil fluids such as Cutting fluids and Lubricating oil.
Materials used in the Measumax 70-670 are carefully selected to bring out a quality results. With a robust
aluminum body and rubber grip, it will provide easy accurate measurements when used correctly.

Specifications

Model
70-670 ATC
Focus Adjustment
Eye Piece

How to Use Your Refractometer

Calibrating: Hold the refractometer in the direction of good
natural light and look into the eyepiece and adjust the eye
peice until the graduated scale is in focus as shown in (Fig.1).
Now open the daylight plate (Fig.3) and place 2-3 drops of
clean distilled water or calibration liquid on the main prism.
Close the daylight plate so the water spreads evenly across
the entire surface of the prism without any air bubbles or dry
spots. Then wait 30 seconds to allow the sample to adjust to
the ambient temperature of the refractometer.
Now turn the adjusting calibration screw until the boundary
of the upper blue field and the lower white field meet exactly
at ZERO on the scale as shown in (Fig.2)
You are now ready to take readings of the liquid you want
to test.
Operation Manual
Range
0-18% Brix
Rubber Hand Grip
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Min. Division
0.1%
Calibration Screw
Main Prism Assembly
Fig.1
Accuracy
±0.1%
Daylight Plate
Fig.2
Fig.3