HI70431 Total Chlorine Indicator & citrate for PCA Series

Blackstone BL931700-1 Mini pH Controller, dosage of acid or base, 4-20 mA recorder output, 115/230 V Water treatment, sewage treatment, neutralization and decontamination, surface treatment, simple industrial processes

Blackstone BL982411-0 ORP mini controller, 0 to 1000 mV, 115/230 V

Flow-thru monitoring ORP electrode with BNC connection and 3 m cable.