... alcohol flame inoculation2.sterile sampling vale and bottom valve3.PH, DO, temp. sensor on lower side, side glass, top with foam ... , measure precision±0.01 pH, control precision±0.02 pH;4.It has auto alarm function.5.pH sensor and signal transmission line, ... precision ±1%;3.It has auto alarm function;4.DO sensor and signal transmission line, HAMILTONFoam control1. Automatically control and ...