HM Digital pH/TDS/EC/Temp Meter Model COM-300
HM Digital pH/TDS/EC/Temp Meter Model COM-300
Stock Icon

Price: $249.00
Sale Price: $229.00
You save: $20.00 (8.03%)
The COM-300 is an advanced waterproof combo meter with superior accuracy.

The meter measures four parameters: pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS) and temperature.

Features include 2 different conductivity conversion factors to convert EC to TDS using the 0.5 (NaCl) or 0.7 (442TM), as well as selectable modes for measurements in the µS, mS and ppm scales.

The meter incorporates automatic temperature compensation (ATC) to accommodate for discrepancies in temperature that would naturally occur, and also features digital calibration for easy and precise calibration that will yield better results.

Customers who bought this also bought


Yellow Sticky Traps for Aphids and Whiteflies (pack of 10)
Stock Icon

Price: $24.00
Sale Price: $20.00
You save: $4.00 (16.67%)
Blue Thrips/Leaf Miner Traps (pack of 10)
Stock Icon

Price: $24.00
Sale Price: $20.00
You save: $4.00 (16.67%)
Organa-Guano 0-4-0 1L
Stock Icon
Price: $30.00
Can-Filters Intake Filter 4"
Stock Icon

Price: $80.00
Sale Price: $70.00
You save: $10.00 (12.5%)
Illuminated Magnifier Loupe 40x
Stock Icon

Price: $25.00
Sale Price: $20.00
You save: $5.00 (20%)
White Plastic Plant Labels 6 Inch 50 pack
Stock Icon

Price: $8.00
Sale Price: $6.00
You save: $2.00 (25%)


May We Suggest


HM pH Meter (PH-80 Hydro Tester)
Stock Icon

Price: $100.00
Sale Price: $75.00
You save: $25.00 (25%)
Illuminated Magnifier Loupe 40x
Stock Icon

Price: $25.00
Sale Price: $20.00
You save: $5.00 (20%)
Stock Icon

Price: $449.00
Sale Price: $399.00
You save: $50.00 (11.14%)
HydroLogic 2-Stage Water Filtration System with KDF85 Catalytic Carbon Filter
Stock Icon

Price: $219.00
Sale Price: $195.00
You save: $24.00 (10.96%)
HM TDS-3 Handheld Meter w/ Carrying Case
Stock Icon

Price: $55.00
Sale Price: $35.00
You save: $20.00 (36.36%)