tds checking meter online manufacture

Yieryi High accuracy aquarium digital pH meter/ORP meter with Temperature Want to know whether the pH / Temperature / ORP of water you drink is up to the standard? If so, this pen-type 3-in-1 pH/ORP/TEMP meter ... Read More

Yieryi EC Meter Digital Water PH Meter Filter Automatic calibration Tester for Measuring Features: Test temperature in degrees / Fahrenheit(switchable unit). Use to measure the pH & EC & TEMP of solution. ... Read More

YIERYI Portable LCD 0-9990ppm Digital TDS Meter (TDS-3L) Filter Water Quality Purity Tester WHAT IS TDS? Total Dissolved Solids(TDS) are the total weight of all solids (minerals, salts, or metals ) that are ... Read More

Yieryi 3 in 1 TDS EC meter conductivity meter TDS PH tester Water Quality Purity Tester Fetures: Locking function: easy to read and record, the instrument will lock the readings; 5 minutes automatic shutdown ... Read More

Yieryi TDS EC meter conductivity meter Function 3 in 1 tester water measurement tool Fetures: Saves measurements for convenient reading and recording New Arrival Auto-off function: turns off meter after 5 ... Read More

Yieryi Function 3 in 1 TDS EC meter conductivity meter tester pen water measurement tool Please pull off the protective cover of the electrode before use; Press the key and put the electrode into the solution ... Read More

Product Features HIGH ACCURACY: TDS meter for checking TDS/salt (NaCl) levels freshwater aquariums, ponds and water purification systems. Ensure Your Pool, General Hydroponics Ph or Even Drinking Water Has a ... Read More

YIERYI Digital ORP Tester electrical 0-1999mg/LmV ORP Meter ORP-986 Water Hydroponics Specifications: Range 0~1999mg/LmV Resolution 1mV Accuracy 5 mV Batteries 4 x 1.5V alkaline Environment 0 to 50C,RH 95% max ... Read More