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      RO water/Meters and solutions

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      58 Products
      Bluelab 2.77EC Conductivity solution

      Bluelab 2.77EC Conductivity solution

      250 ml of 2.77 EC Conductivity Solution.

      Out of stock
      $ 10.00
      bluelab PH 4.0 CALIBRATION SOLUTION

      bluelab PH 4.0 CALIBRATION SOLUTION

      250 ml of Calibration Solution pH 4.0

      Out of stock
      $ 10.00
      Bluelab PH 7.0 Calibration solution

      Bluelab PH 7.0 Calibration solution

      250 ml of Calibration Solution pH 7.0

      Out of stock
      $ 10.00
      Hanna Groline ph/ec/tds combo HI98130

      Hanna Groline ph/ec/tds combo HI98130

      The HI 98130 waterproof floating tester displays pH, high-range conductivity (EC) and total dissolved solids (TDS) with Automatic Temperature Compensation (ATC) on a dual-level LCD display for hydroponics, agricultural, and water quality testing

      Out of stock
      $ 186.00
      Hanna Groline protective “boot”

      Hanna Groline protective “boot”

      HI710030 is an green rubber boot that fits over selected portable meters including HI9814 pH/EC/TDS, HI991000 family of meters, and selected thermistor based thermometers. The silicone rubber boot not only provides additional shockproof protection

      In stock
      $ 37.95
      Hanna Groline 1413 solution 230ml

      Hanna Groline 1413 solution 230ml

      conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight

      Out of stock
      $ 17.95
      Hanna Groline quick cal 230ml

      Hanna Groline quick cal 230ml

      solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each bottle has the lot number and expiration date.

      Out of stock
      $ 17.95
      Hanna soil ph tester

      Hanna soil ph tester

      Designed to bring simplicity to pH testing of soil, the HI981030 GroLine Soil pH Tester is designed for taking direct pH measurements in soil for environmental and agricultural testing.

      In stock
      $ 143.00
      Hydrologic stealth R/O std filter

      Hydrologic stealth R/O std filter

      Removes 98%+ of all contaminants in your tap water. Leading the industry in efficiency the Stealth has a 2:1 waste to product water ratio. Optional 1:1 ratio flow restrictor saves 50% more waste water. Customized for gardening and hydroponics. The Stealth

      Out of stock
      $ 339.95
      Hydrologic small boy R/O upgraded filter

      Hydrologic small boy R/O upgraded filter

      Reduces up to 99% chlorine, sediment, rust, silt, volatile organic compounds (VOCs), mercury, lead, and PCBs (organic chlorine) keeping beneficial bacteria and microorganisms alive and healthy.

      High flow rate 60 gallons per hour
      Rated at 1 GPM (gallon

      In stock
      $ 155.00
      Hydrologic small boy R/O Catalytic carbon filter

      Hydrologic small boy R/O Catalytic carbon filter

      Instant de-chlorinator and sediment filter with upgraded KDF85/Catalytic Carbon filter. Stand alone. 1-Gallon per minute. Small Boy w/ Upgraded KDF85/Catalytic Carbon Filter.

      Out of stock
      $ 175.00
      Hanna Groline quick cal solution 20ml

      Hanna Groline quick cal solution 20ml

      HI50036P is a quick calibration solution for use with Hanna's GroLine pH and/or EC/TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and/or conductivity sensors. Each sachet has the lot numbe

      In stock
      $ 1.56
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