PSC-154: TDS/EC Controller with 4-20mA Output
New controller includes extended range, digital calibration, on-screen temperature, tri-color display and 4-20mA output. *** Includes Probe and 9...
Brand New! The COM-80 is a reliable, economically priced, EC/TDS meter that is perfect for testing applications like hydroponics, gardening, pools, spas, aquariums, reef tanks, water ionizers,...
HM Digital COM-300: Waterproof Professional Series pH/EC/TDS/Temp Meter
The COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water