$239.00
SE
Kodida CT-6658 PH/ORP Controller, Industrial pHmeter with electrodes CT-1001
±1000mV0.00~14.00pH

$265.00
SE
KODIDA CT-6659 Industrial pH meter with electrode CT-1001C
pH、mV±2000mV0.00~14.00pH

$239.00
SE
KeDiDa CT-6659 Industrial PH Tester, Electrodeless Range: 0.00~14.00pH
0.00~14.00pH±2000mV

If you don't know how to choose "PH Meter", please consult customer service.