VIVOSUN pHが＆TDS計コンボ 0 05ph高精度ペン型pHメーター＆+/- 2％読み出し精度3-in-1 TDS EC温度計 TDS + PH

TDS meter are working fine but for the PH meter I personally don’t arrive to fully calibrate it as all the time I do the PH 7 then PH 4 and when it’s arrive to do PH 9 it’s return to PH 7 so impossible to complete the calibration.

its as expected

Ich war überrascht wie gut sie funktionieren und es immer noch tun nach über zwei Jahren (immer wieder Kalibrieren nicht vergessen). Für den Preis hat es mich wirklich überrascht, und präzise sind sie auch noch.

5 Stars — Convenient and Accurate Water Testing Kit This VIVOSUN digital pH and TDS meter kit has been a very useful addition for checking water quality and monitoring pH levels. I’ve used it for pool maintenance and general water testing, and both meters have been simple to operate and easy to read thanks to the clear digital displays. The pH meter responded quickly and gave consistent readings after calibration. I also liked having the separate TDS/EC meter included, since it makes it convenient to monitor multiple water conditions without needing additional equipment. The compact pen-style design is lightweight, portable, and easy to store between uses. Another thing I appreciated was the straightforward calibration process and the included instructions. The readings stabilized fairly quickly, and the hold function on the TDS meter is a helpful feature when testing samples in smaller containers. Overall, this kit offers good value for the price and works well for anyone needing basic digital water testing tools for pools, hydroponics, aquariums, or household use. Accurate, convenient, and easy to use.

Excellent, works well. Just don't have the means to test the accuracy