HM Digital COM-300L pH EC TDS Meter - Waterproof 5-in-1 Professional Tester quick check meter also called redox potential

also called redox potential

and standard pH electrodes

Battery % level remaining displayed at start up

The replaceable probe design means you never need to replace the entire meter—just swap the SP-C3 sensor when needed

Greenhouse growing operations

HM Digital COM-300L pH EC TDS Meter - Waterproof 5-in-1 Professional Tester quick check meter also called redox potentialProfessional 5 in 1 Waterproof pH EC TDS Salinity Temperature Meter The HM Digital COM 300L is a professional grade waterproof combo meter that measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity, and Temperature in a single rugged instrument. With IP 67 waterproof rating, digital calibration, and replaceable probe technology, this meter delivers lab quality results for hydroponics, water treatment, aquaculture, pools,