iTimo TDS Meter Tester Water Purity Filter Measuring Tools T Water Meter Quality Testing Pen 0-9999 PPM Portable EMP/PPM(Yellow)

Well priced and works well until you drop it in the water. Oops! Until then I had no problems with it. Readings stabilised quickly and were accurate enough for my uses. Accuracy was checked constantly with calibration fluid every so often and was reliable. Utilised a three point calibration which I had to find out from the net now to do. Wrong instructions came with it. Easy enough to calibrate. Longevity I couldn't tell you but I know it's not waterproof. Lol!

Happy for the price seems to work as good as the more expensive versions .

An eye opening product

Ok