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Sievers M500e TOC Analyzer
Operation and Maintenance Manual
DLM 78510-02 EN Rev. B
52
SUEZ © 2022
I
NTRODUCTION
The Sievers M500e TOC Analyzer from SUEZ is a high-sensitivity Analyzer used to
measure the concentration of total organic carbon (TOC), total inorganic carbon (TIC),
and total carbon (TC = TOC + TIC) in water samples.
The Analyzer is based on the oxidation of organic compounds to form carbon dioxide
(CO
2
) using UV radiation. Carbon dioxide is measured using a sensitive, selective
membrane-based conductometric detection technique. For each TOC measurement, the
concentration of inorganic carbon species (CO
2
, HCO
3
-
, and CO
3
-2
) is determined and,
after oxidation of the organic compounds, the total carbon (TC) content of the sample is
measured. The concentration of the organic compounds is then calculated from the
difference between the concentrations of TC and total inorganic carbon (TIC), generally
referred to simply as inorganic carbon (IC).
(TOC = TC - IC)
The Analyzer can be used to monitor water samples ranging from high-purity water
containing <0.03 parts per billion (ppb) TOC to water samples containing up to 2.5 parts
per million (ppm) TOC. The Analyzer is easy to operate, with extremely low maintenance,
and no special training or chemical knowledge is required. The Analyzer is calibrated at
the factory, and TOC calibration remains stable for approximately one year. For
configurations with a Standard iOS, re-calibration and validation can be easily performed
at the customer site. In configurations with a Sample Inlet Block, rather than an iOS
system, not all menu options may be relevant or available on the Analyzer.
This manual describes typical operational requirements and recommended procedures
that are valid for most applications. Special conditions in operating environments may
require modifications to the recommendations in this manual. Specific instructions
provided by Technical Support or your local service provider supersede the information
provided in this manual.