by dhl/fedex 100pcs/lot portable digital lcd backlight ph meter pocket pool water aquarium hydroponic wine testers tool

tds water quality test pen is used to test the tds value of water, the conductivity of water, in order to determine who's purity. at the same time, it has the function of testing water temperature and environment temperature, and it can be widely used in water treatment industry, drinking water industry, family, personal home travel, field operation and so on. features 1. digital display: accurate to 4 digits. temperature compensation accurate to 0.1