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pH | ppm| EC | Instruments

  • Out of Stock

    Soil pH Meter, 3-in-1 Soil Test Kit for Moisture & Light & pH, iPower

    Original price $4.20 - Original price $4.20
    Original price
    $4.20
    $4.20 - $4.20
    Current price $4.20

    A 3-in-1 soil test meter that takes the guesswork out of gardening The iPower 3-in-1 Soil Meter is three meters in one device. With our soil pH met...

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    Original price $4.20 - Original price $4.20
    Original price
    $4.20
    $4.20 - $4.20
    Current price $4.20
    Out of Stock
  • GH pH Test Kit 1 oz

    Original price $9.59
    Original price $9.59 - Original price $9.59
    Original price $9.59
    Current price $5.93
    $5.93 - $5.93
    Current price $5.93

    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 obs...

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    Original price $9.59
    Original price $9.59 - Original price $9.59
    Original price $9.59
    Current price $5.93
    $5.93 - $5.93
    Current price $5.93
  • Out of Stock

    Bluelab pH 7.0 Calibration Solution 500 ml

    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $10.53
    $10.53 - $10.53
    Current price $10.53

    pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated...

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    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $10.53
    $10.53 - $10.53
    Current price $10.53
    Out of Stock
  • Out of Stock

    Bluelab pH 4.0 Calibration Solution 500 ml

    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $10.53
    $10.53 - $10.53
    Current price $10.53

    pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated...

    View full details
    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $10.53
    $10.53 - $10.53
    Current price $10.53
    Out of Stock
  • Out of Stock

    GH pH 7.01 Calibration Solution 8 oz

    Original price $9.03
    Original price $9.03 - Original price $9.03
    Original price $9.03
    Current price $4.31
    $4.31 - $4.31
    Current price $4.31

    General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...

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    Original price $9.03
    Original price $9.03 - Original price $9.03
    Original price $9.03
    Current price $4.31
    $4.31 - $4.31
    Current price $4.31
    Out of Stock
  • Out of Stock

    Bluelab pH Pen

    Original price $126.14
    Original price $126.14 - Original price $126.14
    Original price $126.14
    Current price $82.20
    $82.20 - $82.20
    Current price $82.20

    Measures pH and temperature. Selectable units for °C & °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration...

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    Original price $126.14
    Original price $126.14 - Original price $126.14
    Original price $126.14
    Current price $82.20
    $82.20 - $82.20
    Current price $82.20
    Out of Stock
  • Out of Stock

    Bluelab Replacement pH Probe

    Original price $83.74
    Original price $83.74 - Original price $83.74
    Original price $83.74
    Current price $54.57
    $54.57 - $54.57
    Current price $54.57

    The Bluelab® Combo Meter is a conductivity, pH and temperature meter all in one. As the Bluelab® Combo Meter is portable and does not require a pow...

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    Original price $83.74
    Original price $83.74 - Original price $83.74
    Original price $83.74
    Current price $54.57
    $54.57 - $54.57
    Current price $54.57
    Out of Stock
  • Out of Stock

    GH pH 4.01 Calibration Solution 8 oz

    Original price $9.03
    Original price $9.03 - Original price $9.03
    Original price $9.03
    Current price $4.92
    $4.92 - $4.92
    Current price $4.92

    General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...

    View full details
    Original price $9.03
    Original price $9.03 - Original price $9.03
    Original price $9.03
    Current price $4.92
    $4.92 - $4.92
    Current price $4.92
    Out of Stock
  • FALSE
    Out of Stock

    Bluelab Growers Toolbox

    Original price $212.99 - Original price $212.99
    Original price
    $212.99
    $212.99 - $212.99
    Current price $212.99

    Original price $212.99 - Original price $212.99
    Original price
    $212.99
    $212.99 - $212.99
    Current price $212.99
    Out of Stock
  • Out of Stock

    Bluelab pH Probe KCl Storage Solution 100 ml

    Original price $12.58
    Original price $12.58 - Original price $12.58
    Original price $12.58
    Current price $8.50
    $8.50 - $8.50
    Current price $8.50

    Original price $12.58
    Original price $12.58 - Original price $12.58
    Original price $12.58
    Current price $8.50
    $8.50 - $8.50
    Current price $8.50
    Out of Stock
  • Out of Stock

    Bluelab PPM Pen

    Original price $104.94
    Original price $104.94 - Original price $104.94
    Original price $104.94
    Current price $68.39
    $68.39 - $68.39
    Current price $68.39

    Measures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful ...

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    Original price $104.94
    Original price $104.94 - Original price $104.94
    Original price $104.94
    Current price $68.39
    $68.39 - $68.39
    Current price $68.39
    Out of Stock
  • Out of Stock

    HM Digital Handheld TDS-3 Tester

    Original price $30.22
    Original price $30.22 - Original price $30.22
    Original price $30.22
    Current price $20.15
    $20.15 - $20.15
    Current price $20.15

    Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Hol...

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    Original price $30.22
    Original price $30.22 - Original price $30.22
    Original price $30.22
    Current price $20.15
    $20.15 - $20.15
    Current price $20.15
    Out of Stock
  • Out of Stock

    GH pH 7.01 Calibration Solution Quart

    Original price $25.75
    Original price $25.75 - Original price $25.75
    Original price $25.75
    Current price $13.95
    $13.95 - $13.95
    Current price $13.95

    General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...

    View full details
    Original price $25.75
    Original price $25.75 - Original price $25.75
    Original price $25.75
    Current price $13.95
    $13.95 - $13.95
    Current price $13.95
    Out of Stock
  • Out of Stock

    Bluelab pH 7.0 Calibration Solution 250 ml

    Original price $10.50 - Original price $10.50
    Original price $10.50
    $10.50
    $10.50 - $10.50
    Current price $10.50

    pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated...

    View full details
    Original price $10.50 - Original price $10.50
    Original price $10.50
    $10.50
    $10.50 - $10.50
    Current price $10.50
    Out of Stock
  • Out of Stock

    Milwaukee pH Meter pH600 AQ

    Original price $24.99 - Original price $24.99
    Original price
    $24.99
    $24.99 - $24.99
    Current price $24.99

    Original price $24.99 - Original price $24.99
    Original price
    $24.99
    $24.99 - $24.99
    Current price $24.99
    Out of Stock
  • Out of Stock

    Bluelab 2.77EC Conductivity Solution 500 ml

    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $12.44
    $12.44 - $12.44
    Current price $12.44

    The EC2.77 solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solutions shoul...

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    Original price $18.90
    Original price $18.90 - Original price $18.90
    Original price $18.90
    Current price $12.44
    $12.44 - $12.44
    Current price $12.44
    Out of Stock
  • iPower 4-Pack 19" Clean Cut Bowl Leaf Trimmer Replacement Stainless Cutting Blade, 2 Serrated Blades & 2 Straight Blades

    Original price $13.81 - Original price $13.81
    Original price
    $13.81
    $13.81 - $13.81
    Current price $13.81

    - FUNCTION: Stainless steel, razor sharp for crisp, clean cuts, replacement cutting blade for iPower 19" bowl trimmers- INCLUDES 4 BLADES: 2 serrat...

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    Original price $13.81 - Original price $13.81
    Original price
    $13.81
    $13.81 - $13.81
    Current price $13.81
  • Bluelab pH 4.0 Calibration Solution 250 ml

    Original price $10.50
    Original price $10.50 - Original price $10.50
    Original price $10.50
    Current price $6.91
    $6.91 - $6.91
    Current price $6.91

    pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated...

    View full details
    Original price $10.50
    Original price $10.50 - Original price $10.50
    Original price $10.50
    Current price $6.91
    $6.91 - $6.91
    Current price $6.91
  • iPower 4-Pack 13.4" (L) x 0.4" (W) Inch Trimmer Blade Replacement 16" Inch Bud Trimmer Bowl, 2 Serrated & 2 Straight Blades

    Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48

    FUNCTION: Stainless steel, razor sharp for crisp, clean cuts, replacement cutting blade for iPower 16" bowl trimmers INCLUDES 4 BLADES: 2 serrat...

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    Original price $11.48 - Original price $11.48
    Original price
    $11.48
    $11.48 - $11.48
    Current price $11.48
  • Out of Stock

    Oakton Waterproof EcoTestr pH 1

    Original price $77.02
    Original price $77.02 - Original price $77.02
    Original price $77.02
    Current price $45.95
    $45.95 - $45.95
    Current price $45.95

    Original price $77.02
    Original price $77.02 - Original price $77.02
    Original price $77.02
    Current price $45.95
    $45.95 - $45.95
    Current price $45.95
    Out of Stock
  • FALSE
    Out of Stock

    Bluelab pH Down 1 Gallon

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $40.50
    $40.50 - $40.50
    Current price $40.50

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $40.50
    $40.50 - $40.50
    Current price $40.50
    Out of Stock
  • Out of Stock

    GH pH 4.01 Calibration Solution Quart

    Original price $25.75
    Original price $25.75 - Original price $25.75
    Original price $25.75
    Current price $13.95
    $13.95 - $13.95
    Current price $13.95

    General Hydroponics® uses the highest quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl...

    View full details
    Original price $25.75
    Original price $25.75 - Original price $25.75
    Original price $25.75
    Current price $13.95
    $13.95 - $13.95
    Current price $13.95
    Out of Stock
  • Out of Stock

    HM Digital Water Resistant Ec-TDS Meter with Temperature in C-F Hydrotester (Model COM-80)

    Original price $46.44
    Original price $46.44 - Original price $46.44
    Original price $46.44
    Current price $31.07
    $31.07 - $31.07
    Current price $31.07

    Original price $46.44
    Original price $46.44 - Original price $46.44
    Original price $46.44
    Current price $31.07
    $31.07 - $31.07
    Current price $31.07
    Out of Stock
  • Out of Stock

    Bluelab Soil pH Pen

    Original price $210.94
    Original price $210.94 - Original price $210.94
    Original price $210.94
    Current price $119.06
    $119.06 - $119.06
    Current price $119.06

    Original price $210.94
    Original price $210.94 - Original price $210.94
    Original price $210.94
    Current price $119.06
    $119.06 - $119.06
    Current price $119.06
    Out of Stock
  • Out of Stock

    Rapitest Digital Soil pH Meter

    Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79

    Rapitest Digital Soil pH Meter indicates soil pH levels from 3.5 to 9.0 in a digital readout. The meter’s probe measures 5.625 inches long. Printed...

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    Original price $21.79 - Original price $21.79
    Original price
    $21.79
    $21.79 - $21.79
    Current price $21.79
    Out of Stock
  • Out of Stock

    HM Digital pH 80 Meter

    Original price $49.29
    Original price $49.29 - Original price $49.29
    Original price $49.29
    Current price $39.51
    $39.51 - $39.51
    Current price $39.51

    Original price $49.29
    Original price $49.29 - Original price $49.29
    Original price $49.29
    Current price $39.51
    $39.51 - $39.51
    Current price $39.51
    Out of Stock
  • Out of Stock

    Bluelab 2.77EC Conductivity Solution 250 ml

    Original price $10.50
    Original price $10.50 - Original price $10.50
    Original price $10.50
    Current price $6.91
    $6.91 - $6.91
    Current price $6.91

    The EC2.77 solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe. Calibration Solutions shoul...

    View full details
    Original price $10.50
    Original price $10.50 - Original price $10.50
    Original price $10.50
    Current price $6.91
    $6.91 - $6.91
    Current price $6.91
    Out of Stock
  • Bluelab Probe Care Kit - pH

    Original price $23.32
    Original price $23.32 - Original price $23.32
    Original price $23.32
    Current price $15.19
    $15.19 - $15.19
    Current price $15.19

    Everything you need to clean, hydrate and calibrate pH probes. Probe cleaning and correctly storing pH probes ensures you get the most accurate rea...

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    Original price $23.32
    Original price $23.32 - Original price $23.32
    Original price $23.32
    Current price $15.19
    $15.19 - $15.19
    Current price $15.19
  • Out of Stock

    SureTest pH Test Strip Kit 5.5 - 8.0

    Original price $7.99 - Original price $7.99
    Original price
    $7.99
    $7.99 - $7.99
    Current price $7.99

    Original price $7.99 - Original price $7.99
    Original price
    $7.99
    $7.99 - $7.99
    Current price $7.99
    Out of Stock
  • Out of Stock

    Rapitest Mini pH Tester

    Original price $6.30 - Original price $6.30
    Original price
    $6.30
    $6.30 - $6.30
    Current price $6.30

    Original price $6.30 - Original price $6.30
    Original price
    $6.30
    $6.30 - $6.30
    Current price $6.30
    Out of Stock
  • Out of Stock

    HM Digital Waterproof pH Meter

    Original price $108.07
    Original price $108.07 - Original price $108.07
    Original price $108.07
    Current price $86.61
    $86.61 - $86.61
    Current price $86.61

    Original price $108.07
    Original price $108.07 - Original price $108.07
    Original price $108.07
    Current price $86.61
    $86.61 - $86.61
    Current price $86.61
    Out of Stock
  • FALSE
    Out of Stock

    Bluelab Guardian Monitor Power Supply

    Original price $30.74
    Original price $30.74 - Original price $30.74
    Original price $30.74
    Current price $20.03
    $20.03 - $20.03
    Current price $20.03

    Bluelab Guardian Monitor Power Supply

    Original price $30.74
    Original price $30.74 - Original price $30.74
    Original price $30.74
    Current price $20.03
    $20.03 - $20.03
    Current price $20.03
    Out of Stock
  • Out of Stock

    Rapitest Soil Test pH N,P,K (6-Cs)

    Original price $22.79 - Original price $22.79
    Original price
    $22.79
    $22.79 - $22.79
    Current price $22.79

    Rapitest Soil Test Kit uses a patented color comparator test system. Performs forty (40) tests, ten (10) each for soil pH, Nitrogen, Phosphorus and...

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    Original price $22.79 - Original price $22.79
    Original price
    $22.79
    $22.79 - $22.79
    Current price $22.79
    Out of Stock
  • Out of Stock

    24-7 Nutrient Monitor

    Original price $159.99 - Original price $159.99
    Original price
    $159.99
    $159.99 - $159.99
    Current price $159.99

    Original price $159.99 - Original price $159.99
    Original price
    $159.99
    $159.99 - $159.99
    Current price $159.99
    Out of Stock
  • Out of Stock

    HM Digital pH Electrode Storage Solution

    Original price $5.11 - Original price $5.11
    Original price
    $5.11
    $5.11 - $5.11
    Current price $5.11

    Original price $5.11 - Original price $5.11
    Original price
    $5.11
    $5.11 - $5.11
    Current price $5.11
    Out of Stock
  • FALSE
    Out of Stock

    Bluelab pH Down 1 Liter

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $12.99
    $12.99 - $12.99
    Current price $12.99

    Original price $0.00 - Original price $0.00
    Original price $0.00
    $12.99
    $12.99 - $12.99
    Current price $12.99
    Out of Stock
  • Out of Stock

    Accurate pH 8 Soil pH & Moisture Meter

    Original price $71.99 - Original price $71.99
    Original price
    $71.99
    $71.99 - $71.99
    Current price $71.99

    Original price $71.99 - Original price $71.99
    Original price
    $71.99
    $71.99 - $71.99
    Current price $71.99
    Out of Stock
  • Out of Stock

    HortiCare Nutrient Check PPM

    Original price $62.16 - Original price $62.16
    Original price
    $62.16
    $62.16 - $62.16
    Current price $62.16

    Original price $62.16 - Original price $62.16
    Original price
    $62.16
    $62.16 - $62.16
    Current price $62.16
    Out of Stock
  • FALSE
    Out of Stock

    Bluelab pH Controller

    Original price $740.94
    Original price $740.94 - Original price $740.94
    Original price $740.94
    Current price $482.88
    $482.88 - $482.88
    Current price $482.88

    Hands-free monitoring and dosing of solution pH levels. Our clever pH controller automatically monitors and fine-tunes the pH levels for you. You s...

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    Original price $740.94
    Original price $740.94 - Original price $740.94
    Original price $740.94
    Current price $482.88
    $482.88 - $482.88
    Current price $482.88
    Out of Stock
  • Out of Stock

    HM Digital Aquapro TDS Water Tester

    Original price $25.80 - Original price $25.80
    Original price
    $25.80
    $25.80 - $25.80
    Current price $25.80

    Original price $25.80 - Original price $25.80
    Original price
    $25.80
    $25.80 - $25.80
    Current price $25.80
    Out of Stock
  • Out of Stock

    GH 1500 PPM Reference Solution 8 oz

    Original price $5.99 - Original price $5.99
    Original price
    $5.99
    $5.99 - $5.99
    Current price $5.99

    Original price $5.99 - Original price $5.99
    Original price
    $5.99
    $5.99 - $5.99
    Current price $5.99
    Out of Stock
  • Out of Stock

    HM Waterproof EC-TDS-Temp Combo Meter

    Original price $56.99 - Original price $56.99
    Original price
    $56.99
    $56.99 - $56.99
    Current price $56.99

    Original price $56.99 - Original price $56.99
    Original price
    $56.99
    $56.99 - $56.99
    Current price $56.99
    Out of Stock
  • Out of Stock

    Bluelab Guardian Connect

    Original price $507.74
    Original price $507.74 - Original price $507.74
    Original price $507.74
    Current price $330.90
    $330.90 - $330.90
    Current price $330.90

    The Bluelab Guardian Monitor Connect is not only a constant indicator of the desired levels of pH, conductivity and temperature of your nutrient so...

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    Original price $507.74
    Original price $507.74 - Original price $507.74
    Original price $507.74
    Current price $330.90
    $330.90 - $330.90
    Current price $330.90
    Out of Stock
  • Out of Stock

    Bluelab Original Truncheon Meter

    Original price $157.94
    Original price $157.94 - Original price $157.94
    Original price $157.94
    Current price $102.93
    $102.93 - $102.93
    Current price $102.93

    With its super tough, high quality, fully waterproof design, no calibration required, daylight readable blue LED's and no on/off buttons to worry a...

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    Original price $157.94
    Original price $157.94 - Original price $157.94
    Original price $157.94
    Current price $102.93
    $102.93 - $102.93
    Current price $102.93
    Out of Stock
  • Out of Stock

    Rapitest Digital Plus Soil pH Meter

    Original price $23.54 - Original price $23.54
    Original price
    $23.54
    $23.54 - $23.54
    Current price $23.54

    Original price $23.54 - Original price $23.54
    Original price
    $23.54
    $23.54 - $23.54
    Current price $23.54
    Out of Stock
  • Out of Stock

    Rapitest pH Soil Tester (12-Cs)

    Original price $4.49 - Original price $4.49
    Original price $4.49
    $8.79
    $8.79 - $8.79
    Current price $8.79

    Rapitest Soil pH Test Kit uses a patented color comparator test system. Performs ten (10) tests for soil pH. Test results allow the gardener to ame...

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    Original price $4.49 - Original price $4.49
    Original price $4.49
    $8.79
    $8.79 - $8.79
    Current price $8.79
    Out of Stock
  • Out of Stock

    Accurate pH 7 Soil pH & Moisture Meter

    Original price $42.80 - Original price $42.80
    Original price
    $42.80
    $42.80 - $42.80
    Current price $42.80

    Original price $42.80 - Original price $42.80
    Original price
    $42.80
    $42.80 - $42.80
    Current price $42.80
    Out of Stock
  • Out of Stock

    Soil Savvy - Soil Test Kit

    Original price $24.99 - Original price $24.99
    Original price
    $24.99
    $24.99 - $24.99
    Current price $24.99

    Original price $24.99 - Original price $24.99
    Original price
    $24.99
    $24.99 - $24.99
    Current price $24.99
    Out of Stock