On-Line Ph Controller 1.LCD display 2.100 ~ ... output 4.pH ORP Accuracy 0.03pH, 2mV .PH6109 Series PH ORP Controller CHEMINS INSTRUMENT CO., LTD. TEL: ... , Shandong Province, P.R.China Brief Introduction PH6109 series pH / ORP intelligent analyzer is coupled with powerful and ... selection guide Select pH glass electrode carefully based on target application environment, incorrect selection will shorten the ...