Measurement Technology
DPD Method for Residual Chlorine Measurement: Principle, Maintenance & Selection
How the DPD colorimetric method works, what to look for in reagent dosing stability (multi-roller pumps, rigid housings), why lack-of-reagent and lack-of-sample diagnostics matter — and how to choose an online DPD chlorine analyzer.
Measurement Technology 8 min read
TENGINE Application Engineering Team
Written and reviewed by our engineers — 20+ years designing online water quality monitoring systems, with 160,000+ instruments in service worldwide.
How the DPD colorimetric method works, what to look for in reagent dosing stability (multi-roller pumps, rigid housings), why lack-of-reagent and lack-of-sample diagnostics matter — and how to choose an online DPD chlorine analyzer.
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