Anatel A643a - Calibration and Validation 91 of 220
RPS - June 2007 - Edition 12
Anatel Operator Manual
6.4 Conductivity Calibration
Conductivity calibration provides a confirmation of the accuracy of the conductivity values
reported by Anatel’s on-line Total Organic Carbon instrumentation. The calibration consists of
determining the instrument’s meter accuracy by installing a NIST-traceable resistor and then
verifying the cell constant by measuring a solution of known conductivity according to USP
Method <645>. The instrument’s meter accuracy must be within 0.1 µS/cm and its cell constant
must be known to be within ±2%, therefore the conductivity solution measurement must be
within ±2% of the reported label concentration.
Refer to Standard Operating Procedure (SOP) #643–3 for complete instructions on performing
this procedure.
To perform a conductivity calibration:
1) With the desired Analyzer selected in any View, press the Manual Key to access its
menu selections.
2) Use the Up and Down Keys to specify Calibrations.
3) Press Enter to display its submenu.
4) Use the Up and Down Keys to specify Calibrate.
5) Select Cond Calibrate from the subsequent screen and press Enter. If the chosen
Analyzer is connected to an A-Net network on which other instruments reside, the
analyzer will prompt to confirm that it is the correct instrument by verifying its serial
number.
Fig 6-17 : Conductivity Calibration
1 SENSOR NAME
TOC Calibrate:
X
Cond Calibrate:
Fig 6-18 : Calibrate Menu
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