Chapter 6: Calibration, Verification, And System Suitability; Overview - GE Sievers 900 Series Operation And Maintenance Manual

Chapter 6. Calibration, Verification, and System
Suitability

Overview

This chapter describes the calibration and verification procedures for Analyzers running in On-Line
or stand-alone Grab mode without the use of an Autosampler. If your Analyzer has Turbo mode
enabled, do not follow these instructions; refer instead to Chapter 9, "Turbo Operation" for Turbo
calibration instructions.
The Analyzer is calibrated at the factory and should require recalibration only once per year. When
the pump tubing is replaced, perform the sample flow rate calibration. When replacing other items
that affect analysis, such as the UV lamp, perform a verification of the calibration; only re-calibrate
if the verification indicates that a new calibration is necessary.
The Model 900 TOC Analyzers can be calibrated using one of two methods: single-point calibration
at 1, 5, 10, 25 or 50 ppm; or multi-point calibration at 1, 5, 10, 25 and 50 ppm. GE Analytical
Instruments recommends that the Analyzer be calibrated in the field using a single-point
calibration at a concentration that encompasses the range of interest. For customers typically
operating below 1 ppm, GE Analytical Instruments recommends selecting the 1 ppm single-point
calibration. Multi-point calibration calibrates the Analyzer over its entire operating range, and is
available as an alternative procedure for customers. If you will be using the Autoreagent function,
you must perform a multi-point calibration. The autoreagent function should not be used in
applications where samples are expected to be less than 1ppm.
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