Product FeaturesFrom the market leader of testers comes the EcoTestr pH 1 & pH 2 – a new range of value-for-money, quality pH tester series designed for fuss-free pH measurements. Accurate, and easy to use, these testers are ideal for quick pH checks in hydroponic gardening, aquaculture, agriculture, pools, simple lab work and other water/wasterwater applications.:: 0.0 to 14.0 full pH range :: Auto-calibration & auto-buffer recognition :: Automatic temperature compensation :: IP67 waterproof – tester floats on water for easy retrieval :: Long sensor life – no need to change sensors :: Click-lock battery compartment requires no tools for battery replacements :: Hold function freezes reading temporarily for ease of recording :: Sensor protective cap that doubles up as a container for samples or calibration solution