SPER SCIENTIFIC 300005 Lightweight Portable Clinical Refractometer Instruction Manual
- June 9, 2024
- SPER SCIENTIFIC
Table of Contents
SPER SCIENTIFIC 300005 Lightweight Portable Clinical Refractometer
INTRODUCTION
Your lightweight portable refractometer is a precision optical instrument
designed to measure urine specific gravity (UG), serum albumen (SG/protein)
and refractive index (Nd). It uses three accurate and graduated scales that
coincide with JSCP regulations. It is excellent for medical monitoring,
scientific research and quality assurance requirements. Refractometers operate
on the
principle that as the concentration or density of a solution increases, its
refractive index changes proportionately. The refractive angle measured by
your refractometer registers on the scale. The higher the concentration, the
higher the readings register on the scale.
DESCRIPTION
OPERATING PROCEDURE
- With the COVER PLATE open, clean the PRISM with a soft cloth to avoid scratching the surface.
- Aim the refractometer toward a light source and rotate the EYEPIECE to obtain the clearest focus.
- Zero Point Calibration:
- A. Open the COVER PLATE.
- B. Apply a few drops of the included 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. (1.3330, W, and 1.000, respectively)
- Carefully dry the prism platform and COVER PLATE.
- Place a few drops of the test solution on the prism and close the COVER PLATE so the solution spreads evenly on the prism.
- Aim the front of the refractometer towards the light source and focus the eyepiece on the boundary line.
- The boundary line indicates the concentration of Urine Specific Gravity and Refractive Index of the test sample.
- After use, clean the prism with distilled water and a cloth to remove any residue.
- The temperature of the zero point calibration should be at the same temperature as the test solution. For variations in temperature, the zero point should be adjusted once every 30 minutes.
PRECAUTIONS
Never submerge the unit, and do not let liquid seep into the unit’s body.
Clean the refractometer after each use with a soft cotton cloth. Do not
scratch the surface of the prism. Store in a dry, clean, and non-corrosive
environment. Avoid strong or sudden impact.
SPECIFICATIONS
| Serum Albumen| Urine Specific Gravity| Refractive Index
---|---|---|---
Range| 1 to 12 g/dL| 1.000 to 1.050| 1.3330 to 1.3600
Resolution| 0.2 g/dL| 0.002| 0.0005
Accuracy| ±0.2 g/dL| ±0.002| ±0.0005
To ensure the highest accuracy, perform calibration and testing at about 68 to
77°F (20 to 25°C).
Size| 6 3/4″ x 1 1/2″ (171 x 38 mm)
Weight| 3.1 oz. (89 gr.)
Accessories| Screwdriver, Carrying Case, Transfer Pipette, Distilled Water,
Instruction Manual.
WARRANTY
Sper Scientific warrants this product against defects in materials and workmanship for a period of five (5) year 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 probes, batteries, battery leakage, or damage resulting from accident, tampering, misuse, or abuse of the product. Opening the meter to expose its electronics will break the waterproof seal and void the warranty. To obtain warranty service, ship the unit postage prepaid to:
SPER SCIENTIFIC LTD.
8281 E. Evans Rd., Suite #103
Scottsdale, AZ 85260
480-948-4448
The defective unit must be accompanied by a description of the problem and
your return address. Register your product online at
www.sperwarranty.com within 10 days of
purchase.