wtw LF 538 Instruction Manuals page 60

Control of conductivity systems acc. to ISO
9000; GLP - requirements
Wissenschaftlich-Technische Werkstätten GmbH
Directors: Wolfgang Bohn, Klaus Rommel
82362 Weilheim
Tel (0881) 183-0
60
As part of the introduction of a quality system according to
standard series DIN ISO 9000, a growing number of users find
themselves obliged to carry out test equipment checks for the
measuring systems applied. In this context, the system of rules of
the GLP (Good Laboratory Practice) results in almost identical
requirements.
To enable you to meet the ISO 9000 and GLP requirements, it is
necessary to establish the following conditions:
- The measuring systems applied must be calibrated at regular
intervals in order to ensure the accuracy and comparability of the
measuring data acquired.
- The completion of the specified calibrations must always be
recorded in writing: type and identity number of measuring
instrument and measuring cell, date, signature of the person
carrying out the calibration.
It is advisable to have a separate log form or log book for each
measuring system (instrument with measuring cell) where the
calibrations are entered consecutively. This documentation should
also state the calibration intervals, so that the user can see at any
time when the next calibration is due.
Consequently, it will no longer be necessary to attach calibration
labels on the instrument and the measuring cell.
Dr.-Karl-Slevogt-Str. 1
•
Ttx 881 803 Fax (0881) 6 25 39
• •
Application report
Replaces reports 53023,
293054, 594054 and 994054
No.: LF 1194054
LF 1194054