HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Controller or just use it as

or just use it as propagator for your cuttings and seedlings

each available in a convenient dispenser pack

- Helps limit plastic waste

digital thermometers can measure the temperature of many substances from air to liquids to surfaces—all electronically

HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Controller or just use it asDescription COM 300L: Waterproof Professional Series pH EC TDS Temp Meter The COM 300L is a professional grade level pH EC TDS Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment and more. Features Measures Potential Hydrogen (pH), Electrical