Sper Scientific 300038 Software for 300037 Refractometer - Manual (Page 6)

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If calibration is required:
4. Gently clean the prism with a soft cloth.
5. The refractometer is designed to be calibrated against pure distilled water. Place a few drops on the prism
(enough to cover it) and close the black cover.
6. Browse to the Function menu and click on Zero Calibration OR click on the Zero Calibration icon
located on the Toolbar.
The status bar will indicate when calibration is complete:
Measurement Procedure
Your refractometer software setup is now complete. The unit is configured and calibrated. You are now ready to
take measurements.
7. Place the solution to be measured onto the refractometer prism (see Figure 3) and close the prism cover.
(Outside light can affect measurement)
Figure 3
8. Browse to the Function menu and click on Measurement OR click on the Measurement icon located
on the Toolbar.