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Meters, Testing & PH

  • Control Wizard Products Accurate pH 8 Soil pH & Moisture Meter 716578 39638

    Accurate pH 8 Soil pH & Moisture Meter

    The Accurate pH 7 utilizes the electronic ground field effect of the earth on two dissimilar metals. No batteries are required. This meter comes with a cleaning pad. The Accurate pH 8 is a professional pH and Moisture Meter with 12 in Probe. This meter...

    MSRP: $77.95
    $68.83
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  • General Hydroponics pH 7.0 Calibration Solution, 8 oz GH1551

    GH pH 7.01 Calibration Solution 8 oz

    General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are...

    $27.40
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  • HM Digital Meters HMDTDS3 TDS-3 Handheld TDS meter

    HM Digital Handheld TDS-3 Tester

    Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Hold function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts off...

    $38.29
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  • Active Air MGMP1 2-Way pH & Moisture Meter

    Active Air 2-Way Moisture/pH Meter

    Gardeners can conveniently test moisture and pH levels with the handy Active Air 2-Way Meter. Moisture readings register on a scale of 0 (dry) to 10 (moist). pH readings between pH 3 (acidic) and pH 10 (basic) are represented. The durable,...

    $31.51
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  • General Hydroponics GH1516 pH Test Indicator 8 oz

    GH pH Test Indicator 8 oz

    General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to...

    $110.29
  • General Hydroponics pH 4.01 Calibration Solution 8 oz GH1541

    GH pH 4.01 Calibration Solution 8 oz

    General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are...

    $27.40
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  • HM Digital Meters HMDPHM80 PH/Temperature Meter

    HM Digital pH 80 Meter

    Resolution: pH 0.1 pH, 0.00–14.0 pH. Accurate to +/-0.1 pH. Hold button and auto shut-off. Automatic calibration: Auto-ranging to 4, 7 or 10 pH. Very reliable and long lasting. Low battery indicator. Clear cap to notice moisture (or lack of) on probe...

    $54.34
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  • Hanna Instruments HI70300L Storage Solution,  16 oz

    Hanna Storage Solution, 16 oz

    Hanna storage solutions are prepared with high-grade potassium chloride and potassium hydrogen phthalate by titration with NIST 2201 standardized silver nNitrate and NIST 84j standardized sodium hydroxide solution, respectively. To minimize clogging and...

    $34.75
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  • Hydrofarm LG17000 Hydrofarm Light Meter (Footcandles)

    Analog Light Meter (Footcandles)

    Photosynthesis and plant growth depend on the sun or specially-designed lighting systems. But of that light reaching the plant, only specific types of energy (in the lighting spectrum) drive the photosynthesis process. Since light is the most...

    $43.39
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  • Hydroponic Essentials Essentials pH Test Kit ESPHTEST

    Active Aqua Hydroponic pH Test Kit

    (Wide Spectrum) Measures 3-10 pH. The Hydroponic pH test kit is good for 150 tests. At the rate of 3 tests per week it will last one year, making it excellent value for money. This kit covers a pH range of 3-10 measuring in 0.1 increments.

    $27.46
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  • General Hydroponics 1500 ppm Calibration Solution 8 oz GH1571

    GH 1500 PPM Reference Solution 8 oz

    General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are...

    $27.82
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