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      73 Products
      Ph 4.01

      Ph 4.01

      a high quality pH 4.01 calibration buffer produced in accordance with ISO 3696/BS3978 standards using high purity salts, deionized water, certified weight-checked balances.

      Out of stock
      $ 18.50
      General hydroponics ph down gallon

      General hydroponics ph down gallon

      The Acid formulation uses food grade Phosphoric acid to lower the pH to the proper level. Widely recognized as a consistent and reliable product.

      In stock
      $ 38.99
      Hydroflow black vinyl tube 5/8” OD

      Hydroflow black vinyl tube 5/8” OD

      Hydro Flow Black Vinyl Tubing

      Premium excellent quality vinyl tubing. Made in the USA.

      In stock
      $ 47.99
      Hydroflow rubber grommet 3/4”

      Hydroflow rubber grommet 3/4”

      Choose from the 4 sizes of Hydro Flow grommets to fit your needs
      Made from rubber
      Sold in bag or case quantities only
      Choose from the 4 sizes of Hydro Flow Grommets to fit your needs
      Made from rubber
      Easy seal application makes these a breeze to inst

      In stock
      $ 0.79
      Hydroflow black vinyl tube 1/4” OD

      Hydroflow black vinyl tube 1/4” OD

      Hydro Flow Black Vinyl Tubing

      Premium excellent quality vinyl tubing. Made in the USA.

      Out of stock
      $ 29.99
      Stealth RO red

      Stealth RO red

      Standard 10" x 4.5" sediment pre-filter included with the Evolution system. Pleated and cleanable.

      Reduces silt, rust, dirt, sand, and sediment. To clean, rinse and hose on a regular basis and make sure to change every 6-12 months of use.

      Out of stock
      $ 33.95
      Bluelab PH 7.0 Calibration solution

      Bluelab PH 7.0 Calibration solution

      250 ml of Calibration Solution pH 7.0

      Out of stock
      $ 15.99
      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 light meter

      Hanna light meter

      The Hanna Digital Light Meter has been designed for simplicity of use in taking rapid light measurements. The HI 97500 is provided with a light sensor connected by a flexible coaxial cable which allows remote, stable and optimum position measurement of li

      In stock
      $ 140.00
      Hanna Groline soil ec tester

      Hanna Groline soil ec tester

      The HI98331 Soil Test™ is a pocket tester specifically designed to directly measure soil conductivity (EC) and temperature. With a compact size, single button operation, and automatic calibration, Soil Test is an excellent choice for taking direct conduct

      In stock
      $ 143.00
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