GE Analytical Instruments ©2009 143 of 236 DLM 90488-01 Rev. A
Figure 22: The Sample Flow Rate Calibration Summary Screen
Handling Standards
Because of the prevalence of both conductivity contaminants and organic carbon contaminants,
sample preparation and control is extremely delicate. Special handling of the standard solutions is
required.
Store standards at approximately 5 °C (±4 °), away from light, in a box or solid-door refrigerator.
Warm standards to ambient temperature prior to starting analysis. Avoid touching the top of the
vial to protect against introducing foreign particles, TOC, and conductivity.
After following these steps, proceed either to “Performing a Single-Point Calibration” below or to
“Performing a Multi-Point Calibration” on page 146.
Performing a Single-Point Calibration
Before performing a single-point calibration, save the current Analyzer system settings and
evaluate whether a TOC Autozero is required, as described under the section called “Preparing for
Calibration” on page 139.
GE Analytical Instruments recommends selecting a standards concentration that encompasses the
normal range of TOC measurement for your application.
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