N.H. Code Admin. R. Env-Wq 1102.39
“Oxidation reduction potential (ORP)” means a measure of the ability of chemicals in the water to oxidize, or reduce, ions, generally measured in millivolts (mV).
Source. (See Revision Note #1 at chapter heading for Env-Wq 1100) #8468, eff 11-1-05; ss by #10577, eff 5-1-14 (See Revision Note #2 at chapter heading for Env-Wq 1100); ss by #13198, eff 5-1-21 (formerly Env-Wq 1102.35) (see Revision Note #3 at chapter heading for Env-Wq 1100)