This is an easy-to-use instrument to test the water quality of drinking water, aquarium, swimming pool and so on. It adopts sensitive probe and can test TDS quickly and accurately. Mini size and light weight, it’s convenient and portable to carry with you anywhere. Features: Portable water tester pen adopts sensitive probe and can test TDS of the water. Easy, accurate, fast and steady to use. Remove the protective cap; turn on the tester, immerse the electrode into water and stir gently; wait until the reading is stable and record the value; clean and dry it. Digital screen provides clear display, greatly enhancing reading experience. Battery operated, low power consumption, long service life. This water quality analyzer can test the TDS of drinking water, tap water, water purifier, aquarium, swimming pool, hydroponics, aquiculture, agriculture, etc. Concise appearance, exquisite workmanship. Compact and lightweight, easy and convenient portability. Note: 1. TDS is one of the indexes
