The Sms 122 by Milwaukee is our favorite ph controller by far.. This unit is easy to use and great for many applications such as aquarium use. The sms122 can be used with the ma957 co2 regulator.
The sms122 ph controller has a range from 0.0 to 14.0, WITH ±0.2 pH
ACCURACY AND 2 POINT MANUAL CALIBRATION. SET POINT RANGE 5.5 TO 9.5 pH, AND LED VISUAL ALARM ACTIVE WHEN READING IS HIGHER THAN SET POINT. POWER PLUG SOCKET FOR CO2 DOSING.
The SMS 122 by Milwaukee Instruments SUPPLIED WITH 12 V DC POWER ADAPTER, MA911B/2 DOUBLE JUNCTION pH ELECTRODE, 20 ml. pH 7.01 SACHET BUFFER SOLUTION AND SCREWDRIVER FOR CALIBRATION. Be sure to get your sms122 from water-testers.com other co2 items including regulators and tanks listed @
www.Co2-Canisters.com