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Hydroponic Supplies

Calibration & Cleaning Solutions

  1. 1
     
    Oakton Calibration Solution

    All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use. Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within ?0.5% and are referenced to 25?C. Oakton? buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77?F (25?C). Store buffers away from direct sunlight.

  2. 2
     
    pH 4.01 Calibration Solution

    General Hydroponics uses the highest quality reference solutions. Growers can use our reference solutions widely among many popular brands of meters. Available in 8 ounce and 1 quart sizes.

  3. 3
     
    pH 7.0 Calibration Solution

    General Hydroponics uses the highest quality reference solutions. Growers can use our reference solutions widely among many popular brands of meters. Available in 8 ounce and 1 quart sizes.

  1. 4
     
    1500 ppm Calibration Solution

    General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters. Available in 8 ounce and 1 quart sizes.

  2. 5
     
    Hanna PH4 Calibration Solution 16 Ounces

    HANNA?' buffer solutions are prepared according to precise formulas and are standardized with a pH meter calibrated according to the NIST standards.

  3. 6
     
    Storage Solution, 16 Ounces

    Storage Solution, 16 Ounces

  1. 7
     
    pH Probe Cleaning & Calibration Kit

    ompatible with all pH probes. If the probe is contaminated or dirty, it affects the accuracy. The probe surface is where the instrument takes the reading of the solution and the information is sent back from the probe to the electronic brain of the instrument. Cleaning is a very easy task and it prolongs the life of the instrument.

  2. 8
     
    Electrode Cleaner Twin Pack

    Electrode and Probe Cleaning Solutions - Used to clean meter tip. Works for both pH and conductivity meters. Two eight ounce bottles.

  3. 9
     
    Hanna 1413 micron uS/CM Calibration Solution 16 oz

    The 1413 ?S/cm solution is the one best suited for general use.

  1. 10
     
    pH Meter Maintenance Tri-Pack

    ***DISCONTINUED*** pH 4.01, pH 7.01, Electrode Storage Cleaner - These solutions are used to calibrate pH meters to assure they are accurate and working properly. You should check your pH meter frequently because the properties of the meters membrane is constantly changing from normal use and aging.

  2. 11
     
    Hanna PH7 Calibration Solution 16 Ounces

    All Hanna solution bottles come with a pH Vs. Temperature chart together with the production lot # and expiration date to guarantee maximum accuracy.

  3. 12
     
    Nutrient Probe Cleaning Kit

    Compatible with all nutrient probes. If the probe is contaminated or dirty, it affects the accuracy. The probe surface is where the instrument takes the reading of the solution and the information is sent back from the probe to the electronic brain of the instrument. Cleaning is a very easy task and it prolongs the life of the instrument.

  1. 13
     
    Hanna 1500 PPM Solution 16 oz

    1500PPM Solution. 16 oz.

  2. 14
     
    Oakton Calibration Solution 4.0

    All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use. Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within ?0.5% and are referenced to 25?C. Oakton? buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77?F (25?C). Store buffers away from direct sunlight.

  3. 15
     
    Oakton Calibration Solution 7.0

    All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use. Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within ?0.5% and are referenced to 25?C. Oakton? buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77?F (25?C). Store buffers away from direct sunlight.

  1. 16
     
    Oakton Calibration Solution 1413 Conductivity Solution

    All OAKTON Conductivity/TDS calibration solutions are cross checked using different test methods, premixed, and ready to use. Standards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within ?0.5% and are referenced to 25?C. Oakton? buffers for meters with 0.01 resolution are standardized against NIST-certified pH references within 0.01 pH at 77?F (25?C). Store buffers away from direct sunlight.