pH Combined,, pH Skin, Oxygen(DO), Pt/ORP, Conductivity electrode, etc
Range: 0--14 pH,
Temp.: 0--60,
Reference electrode: Ag/AgCl,
Potential: 7 +/- 1, or 2 +/- 1 pH,
ORP: -150--1050mV,
Conductive cell constant: 0.8--1.2 cm-2,