JBL CO2 Plus Ph Test Kit

A special indicator permits direct measurement of the CO2 level in milligrams/litre 20 to 25 milligrams/litre CO2 is ideal Replace the indicator once every 3 to 4 weeks, lasts a total of 9 to 12 months Indicates the pH value (6.4 to 7.8) in addition to the CO2 level