AC Infinity pH/TDS Meter PRO Kit, Interchangeable Probe

Have been using cheap testers for years, they get the job done but you have to be so careful with them as they are not waterproof and eventually will get wet and stop working. This meter is waterproof. Its very easy to use, easy to calibrate, and comes with every thing you need to calibrate it and maintain the tester. Very nice case to keep it all organized. Even the cap that keeps the pen tip safe is water tight and keeps the tip wet at all time. Would buy again but probably will never have to with normal use.

It’s great recommend 10 times

Good meter at a good price!