AST-800S Total Organic Carbon Analyzer

The AST-800S Total Organic Carbon Analyzer is an analytical instrument that utilizes the principle of high-temperature catalytic oxidation – NDIR detection to measure the total organic carbon concentration in water samples. It can detect water samples with TOC concentrations ranging from 0.050 ppm to 35,000.0 ppm. It features high sensitivity,accuracy, and excellent stability.
System Overview
The AST-800S is a simple-structured instrument. Its main components are installed on the main unit. Before measurement, the instrument needs to be connected to the gas path and the reagents should be prepared. The instrument is controlled by a specialized software installed on an external computer for data processing tasks such as measurement, calibration, and printing.

Working Principle
By using a high-performance oxidation catalyst in the combustion furnace, the sample is fully combusted and decomposed at high temperatures into carbon dioxide and water. The water vapor then passes through.
The condenser is cooled and then removed. The carbon dioxide is measured using a non-dispersive infrared detector (NDIR) to determine the total carbon (TC) content in the sample.
The inorganic carbon in the sample is decomposed into carbon dioxide and water by an acid reagent. The water vapor is removed after being cooled by a condenser, and the carbon dioxide is removed using a non-porous material.
The total inorganic carbon (TIC) content in the sample was determined by non-dispersive infrared detector (NDIR); total organic carbon (TOC) = TC – TIC.

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AST-800S Total Organic Carbon Analyzer