Water for injection, like purified water, also requires disinfection and sterilization facilities in the system. Moreover, the pipeline distribution system has evolved from the traditional water supply pipeline to a circulation management system. In the testing of water for injection, there is a TOC item. For more details, please read on!
Toxins in various organic pollutants, microorganisms and bacteria, after catalytic oxidation, will be transformed into carbon dioxide, which then changes the electrical conductivity of water. This electrical conductivity data will be converted into the content of TOC (Total Organic Carbon). If TOC is controlled at a very low level at this time, it indicates that the organic matter, microorganisms and other pollutants in the water are in a relatively good and controlled state. This is the crucial reason why there is a TOC item in the water for injection testing project! Simply put, TOC is used to monitor water pollution. A TOC analyzer is used to detect the total organic carbon content in water.
As for the detection methods used in TOC analyzers, there are actually many. The TOC-8000 – Total organic carbon online analyzer produced by Hangzhou Modi adopts the non-dispersive infrared (NDIR) colorimetric method, and the process is: The pre-treated water sample is injected into the ultraviolet digestion device through an injection pump. The inorganic carbon in the water sample will be converted into carbon dioxide gas under the action of strong acid and then seep out from the gas/liquid separator. Subsequently, the TOC in the water sample will undergo an oxidation reaction with the strong oxidant in the reagent, and the TOC in the water will be converted into carbon dioxide gas, which will then be carried by the carrier gas to the condenser today. After condensation, the carbon dioxide gas is filtered out for possible solid particles and some interfering substances that may exist in it, and then sent into the non-dispersive infrared NDIR gas measurement chamber for metal optical telecommunication measurement. The signal output by NDIR is related to the concentration of carbon dioxide gas and also to the TOC in the water sample to be tested. By measuring this signal, the content of TOC can be known.
NOTE: If the water for injection system deviates from normal operation, it is very likely that the microbial content has exceeded the standard to a certain extent. At this time, measures must be taken promptly to bring it back to normal operation.
