Total suspended solids (TSS) is an analysis method that requires filter, wet weighing, drying in an oven for a few hours, then dry weighing. This is typically not performed by treatment plants and even for labs it is time consuming.
Turbidity is a surrogate measure for TSS that allows rapid automated analysis of batches of samples. A log-linear model shows strong positive correlation between TSS and turbidity (R2=0.9374) with a regression equation of [ln (TSS)=0.979 ln (Turb.) +0.574]. This model can be applied directly to turbidity analysis results to determine the TSS. MANTECH offers the MT30 analyzer for quick and easy "hands off" TSS analysis, only requiring 40mL of sample volume in batches up to hundreds of samples.
An example scatterplot showing a Turbidity:TSS correlation is provided below: