pH Meter
Brand ATC Pen ( type pH - 2011 )
Brand HM Digital
1. pH Meter type pH-80
2. pH Meter type pH-200
Brand Lutron
1. pH Meter type pH-208
2. pH Meter type pH - 222
Brand Hanna
1. pH Meter type HI-83141
2. pHI 8424 Microprocessor pH/mV meter, ATC
3. HI 9125 Waterproof, portable pH/ORP meter with Calibration Check™