Water/Wastewater
Get the true TOC with the aid of a measurement against the flow
Jul 03 2014
Within operating with water - independently of the industry - accurate measurings help to control and optimize production processes resulting in huge cost savings. As a part of water analysis not only the analyser's measurement system is of importance in attaining accurate results. The right sample taking system is equally essential to obtain an exactly measurement. Depending on the application, water loads and water composition are subject to high fluctuations. Due to their measuring technique, common analysers block very fast. Inaccurate measurement results or delays in sampling may result in damage - often associated with financial losses. If the sampling is not carried out, it might even imply the temporary failure of the production process. To prevent repair tasks and other problems, the sample is pretreated and filtered.
It is a fact that any pretreatment or filtration will affect the analysers' measuring results.
When a part of a sample is removed before a sample is fed into the analysis system, inevitably the sample is not longer representative. Thus, the final results are inaccurate.
With LAR's patented maintenance free FlowSampler® this is not the case. It is a sampling device that does not require any maintenance intensive filtration. Samples are siphoned-off from the sample stream against the main flow of the stream. Due to the strong current of the sample stream all relevant organic particles, as well as heavier particles such as sand, are captured and drawn-off so that the sample enters the system unaltered. Even difficult challenges like sampling at the inlet of a sewage treatment plant before the course screening do not present a problem for the FlowSampler® and it can be used to reproducibly take samples of waste waters with high particle content.
These results cannot reached with any kind of filter, filter sieve or rotating sieve.
Additionally, LAR analysers use the ultra high temperature combustion method at 1,200°C guaranteeing the complete oxidation of all carbon containing molecules including the particles within a sample. Not only is the total organic carbon detected by the QuickTOCultra analysis method but due to the sampling technique of the LAR FlowSampler® no carbon is lost in the sampling process. Hence the results really do show the TRUE TOC.
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