Hanna HI98107 Checker Handheld Waterproof Pocket pH Tester for Aquariums, Pools, Ponds

Easy to use pH water tester that makes monitoring water quality simple Compact and portable design for on-the-go testing in various applications User friendly interface with simple button operation Great for drinking water, aquariums, pools, & ponds.You may also like Hanna Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester.