SALT REFRACTOMETER 300006 INSTRUCTION MANUAL SPER SCIENTIFIC
CONTENTS Introduction ............................................... Description ................................................ Operating Procedures ............................... Precautions ............................................... Specifications ............................................ Warranty ...................................................
Operating Procedures 1. With the COVER PLATE open, clean the PRISM with a soft cloth to avoid scratching the surfaces. 2. Aim the refractometer toward a light source and rotate the EYEPIECE to obtain the clearest focus. 3. Adjustment of the null (reference point): A. Open the COVER PLATE. B. Apply a few drops of pure distilled water onto the PRISM platform. C. Close the COVER PLATE. D. Turn the CALIBRATION SCREW so that the dark and light boundary line coincides exactly with the 0% line on the scale. 4.
Precautions Never submerge the unit, and do not let liquid to seep into the unit’s body. Clean the refractometer after each use with a soft cotton cloth. Do not scratch surface of the prisms. Store in a dry, clean, and non-corrosive environment. Avoid strong shocks. Specifications Measuring Range 0-28% Resolution 0.2% Accuracy ±0.2% Size 6 3/4” x 1 1/2” Weight 6.
