Calibration of EC & TDS analyzer

1.0
  PURPOSE
 

        The purpose of the standard operating procedure is
to provide guidelines for calibration EC and TDS analyser. 

2.0   SCOPE

        The
scope of this standard operating procedure includes calibration of EC
and TDS analyser.

3.0    RESPONSIBILITY

3.1    Section In charge

3.2    Technical Manager

3.3    Q.A. Manager

4.0    PROCEDURE

4.1    PRE- OPERATION INSTRUCTIONS

4.1.1 Ensure various containers
(Polythene and / or glassware etc.,) are free from alkalinity, especially when
they are steam cleaned. 

4.1.2 Conductivity cells selected is
appropriate for the conductance range of interest having its platinum chloride
black coating in good condition. Soaked in distilled water for a least 2 hours
before use. Thoroughly clean.

        
NOTE:

        
A new conductivity cell should be soaked in distilled water for at least
24 hours.

        
Thermo-probe and / or thermometers are / is in good working condition or
handy.

        
Keep the samples to be tested handy in clean proper containers.

4.1.3 Ensure the containers used for the
solutions / samples are ABSOLUTELY CLEAN AND DRY.The quantity of solutions /
samples are sufficient enough to ensure immersion of sensor part of the cells /
probes. 

4.1.4 Ensure 90-260 V AC, 50-60 Hz,
single-phase powder is available in 3 contact 5A AC powder outlet. Cartridge
fuse of 3A F-250 V AC is in its place in the instrument.