SUGAR/BRIX REFRACTOMETER 300003 INSTRUCTION MANUAL SPER SCIENTIFIC
TABLE OF CONTENTS Introduction ............................................... 3 Panel Description ...................................... 3 Operating Procedures ............................... 4-5 Temperature Correction ............................ 5 Temperature Correction Table .................. 6 Precautions ............................................... 7 Specifications ............................................ 7 Warranty ...................................................
Introduction: Your portable refractometer is a precision optical instrument designed to measure the concentration of sugar in aqueous solutions. It utilized the standardized Brix scale which is accurate and easy to read. The unit’s lightweight, ergonomic design makes it convenient for both laboratory and field applications. It is excellent for quality assurance, process control requirements, and scientific research.
Operating Procedures 1. With the COVER PLATE (1) open, carefully clean the PRISM (3) and REFLECTING WINDOW (2) with a soft cloth. Avoid scratching the surfaces. 2. Aim the refractometer toward a light source and select the 0-50% scale by rotating the SCALE SELECTOR (6). 3. Rotate the EYEPIECE (7) to obtain the clearest focus. 4. Adjustment of the null (reference point): A. Open the COVER PLATE (1). B. Apply a few drops of pure distilled water onto the REFRACTING PRISM (3). C. Close the COVER PLATE (1). D.
11. After use, clean the refracting and illuminating prisms with a soft cloth to remove any surface residue. 12. The temperature of the null reference liquid should be at the same temperature as the sample solution. For variations in temperature during use, the null point should be recalibrated once every 30 minutes. Temperature Correction Your refractometer is designed to operate with distilled water and sample solutions at a standard temperature of 20°C (68°F).
21 22 23 24 25 26 27 28 29 30 10 11 12 13 14 15 16 17 18 19 20 Subtract from reading Add to reading -6- Temperature °C 5 0.54 0.46 0.45 0.40 0.35 0.29 0.24 0.18 0.13 0.06 0.0 0.07 0.13 0.20 0.27 0.35 0.42 0.50 0.57 0.66 0.74 0 0.50 0.46 0.42 0.37 0.33 0.27 0.22 0.17 0.12 0.06 0.0 0.06 0.13 0.19 0.26 0.33 0.40 0.48 0.56 0.64 0.72 0.07 0.14 0.21 0.28 0.36 0.43 0.52 0.60 0.68 0.77 0.58 0.53 0.48 0.42 0.37 0.31 0.25 0.19 0.13 0.06 0.0 10 0.07 0.14 0.22 0.29 0.37 0.44 0.53 0.61 0.69 0.78 0.61 0.55 0.
Precautions With reasonable care, your refractometer’s reliability, precision and optical performance will not change. • 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.
WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of five (5) years from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover damage resulting from accident, misuse, or abuse of the product.
