Total Suspended Solids (TSS) is a measurement of all the solids in a water sample after filtration and any water has been removed. It is carried out in a laboratory environment via a gravimetric method. Suspended solids are made up of small solid particles which remain in suspension in water either as a colloid or due to the motion of the water. Sedimentation is often utilised to remove them in water treatment as they are usually relatively large particles.
A gravimetric method does not lend itself to process control or ensuring compliance with a discharge consent so online TSS measurement is usually carried out by measuring the turbidity of the water and assuming or creating a relationship between TSS and turbidity. There is no universal relationship between the two, the measurements correlate but a degree of local calibration is always required.

An online UV-Vis spectrophotometer for TSS measurement and more in wastewater.

TSS UV-Absorption Photometer for Multi-Parameter Water Quality Analysis

Measure key wastewater parameters with our Suspended Solids Analyser, including MLSS, SVI, supernatant clarity, and floating sludge. Designed for reliable, automated performance in wastewater treatment and process control.
Ensuring compliance with any COD discharge consents is an important part of a manufacturers monitoring regime, in this case study, the dairy went further and reduced product loss.
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