SALT REFRACTOMETER 300011 INSTRUCTION MANUAL SPER SCIENTIFIC
CONTENTS Introduction ............................................... Description ................................................ Operating Procedures ............................... Precautions ............................................... Specifications ............................................ Warranty.................................................... 2 2 3 4 4 4 Introduction: This precision optical instrument is designed to measure the concentration of salt in aqueous solutions.
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 until the dark and light boundary line coincides with the bottom line of 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 Range 0.0 ~ 100 ppt, 1.000 ~ 1.070 sg Resolution 1.0 ppt, ±0.001 sg Accuracy ±1.0% ppt, ±0.001 sg Size 6 3/4” x 1 1/2" (171 x 38 mm) Weight 3.1 oz. (89 gr.