The Zetasizer WT is a fully automated, on-line analyzer that continuously measures zeta potential of the raw water just after chemical addition and rapid mix. Zeta potential is a parameter that directly quantifies the charge of contaminants in the water and is a predictor of  coagulation and floc development. The analyzer allows water treatment plant operators to control the coagulation process in near real-time.

Delivering absolute (no calibration), highly sensitive analysis, the Zetasizer WT system enables a proactive response to sudden changes to raw water quality, enabling plant stability and reducing the risk of plant upsets. The optimization of charge neutralization results in substantial financial benefits due to a reduction in chemicals usage and sludge disposal costs, avoiding downstream filtration problems and realizing cost savings in the 15-30% range, as reported by existing users.