APPENDIX A STANDARD CALIBRATION
MB90 MB120 Series Service Manual
61
Ohaus Corporation www.ohaus.com
APPENDIX A.
Weight and temperature calibration
A.1 Weight Calibration
The Moisture Analyzer can be calibrated with an external mass of 50 grams. Calibration of the
Moisture Analyzer is not absolutely necessary for a correct moisture determination as the
measurement is relative. The balance determines the weight of the sample before and after drying and
the moisture is calculated on the basis of the ratio between wet and dry weights.
Nevertheless, you should calibrate the built-in balance under the following conditions:
- If this is stipulated by your quality assurance system (GLP, GMP, ISO 9001).
- If you suspect the analyzer has been abused.
Note: Do not cover the lid during any weight calibration
To calibrate the analyzer, proceed as
follows:
Press the Setup button to access the Setup
menu.
Press Back to return to Home screen.
