Metrohm 726 Titroprocessor - Manual (Page 281)

13. Appendix
726 Titroprocessor, Instructions for use 275 275
13.5 Validation / GLP
The Titroprocessor 726 supports the monitoring of maintenance intervals as
well as system validation and sensor tests.
13.5.1 Maintenance intervals
The maintenance of the Titroprocessor 726 should be carried out at least
once per year by a service technician from your local Metrohm agency.
The service technician updates the service data and enters a suitable
maintenance interval.
When this maintenance interval has elapsed the Titroprocessor 726 displays
a warning when it is switched on and recommends that the operator should
contact the Metrohm service department.
The service data can be seen on the GLP page. They are called up by
pressing the key on the keyboard.
ЪДДД GLP ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿
³ ³
³ Method Validations Date Interval Result ³
³ ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД ³
³ 1. ³
³ 2. ³
³ 3. ³
³ 4. ³
³ 5. ³
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³ Instrument ident. : 01106 ³
³ Last servicing : 1997-11-25 ³
³ done by : B. Miller ³
³ Program version : 5.726.0012 ³
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АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД QUIT ДЩ
ЪДДДДДДДВДДДДДДДВДДДДДДД¿ ЪДДДДДДДВДДДДДДДВДДДДДДД¿ ЪДДДДДДДВДДДДДДДВДДДДДДД¿
³ ³ ³Delete ³ ³Define ³Extend.³Start ³ ³ ³Sample ³Sensors³
³ ³ ³method ³ ³method ³info ³valid. ³ ³ ³silo ³ ³
АДДДДДДДБДДДДДДДБДДДДДДДЩ АДДДДДДДБДДДДДДДБДДДДДДДЩ АДДДДДДДБДДДДДДДБДДДДДДДЩ
The service data are updated by the service technician.
13.5.2 Sensor test
The Titroprocessor 726 offers a sensor test procedure which checks
whether the pH electrode is still functioning properly. In order to guarantee
the suitability of the sensor for a specific (or general) application, separate
limits can be defined for each sensor; these must not be exceeded in the
sensor test.
The sensor test consists of an extended calibration with automatic control of
the stirrer 'Int.A' or 'Int.B'. The test can be carried out with any buffer set
containing the buffers pH 4 and pH 7. We recommend Metrohm buffers, but
other buffer sets can also be used.