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pH Meter, pH probe, EC meter, Combo meter, bluelab, hanna instruments

Meters, Probes and Solutions

Shop pH meters, EC meters, pH probes, combo meters and solutions from Bluelab, Hanna Instruments, Cutting Edge Solutions and more.

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  • Bluelab pH 4.0 Calibration Solution 250 ml
    #N/A
    Save up to $3.90 Save $0.00
    $1.92 - $18.90
    $1.92 - $18.90
    $1.92
    $1.72 - $15.00
    $1.72 - $15.00
    $1.72

    Bluelab 4.0 pH Calibration Solution

    Bluelab

    Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions ar...

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    $1.92 - $18.90
    $1.92 - $18.90
    $1.92
    $1.72 - $15.00
    $1.72 - $15.00
    $1.72
    Save up to $3.90 Save $0.00
  • Bluelab pH 7.0 Calibration Solution 250 ml
    #N/A
    Save up to $3.90 Save $0.00
    $1.92 - $18.90
    $1.92 - $18.90
    $1.92
    $1.72 - $15.00
    $1.72 - $15.00
    $1.72

    Bluelab 7.0 pH Calibration Solution

    Bluelab

    Calibration and conductivity standard solutions... a must in every grower's toolbox. The Bluelab calibration and conductivity standard solutions ar...

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    $1.92 - $18.90
    $1.92 - $18.90
    $1.92
    $1.72 - $15.00
    $1.72 - $15.00
    $1.72
    Save up to $3.90 Save $0.00
  • $225.00 - $225.00
    $225.00
    $225.00
    $225.00 - $225.00
    $225.00

    Hanna GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester

    Hanna Instruments

    The HI98131 is a slim, lightweight, and waterproof pocket tester that measures pH, conductivity (EC), TDS (ppm), and temperature. Simple, two-butto...

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    $225.00 - $225.00
    $225.00
    $225.00
    $225.00 - $225.00
    $225.00
  • Bluelab� pH Probe KCl Storage Solution 120 ml (Cas
    Save up to $5.50 Save $0.00
    $14.70 - $24.50
    $14.70 - $24.50
    $14.70
    $13.00 - $19.00
    $13.00 - $19.00
    $13.00

    Bluelab pH Probe KCl Storage Solution

    Bluelab

    The perfect solution to store and hydrate your Bluelab pH products. Bluelab knows it is extremely important to care for and store pH probes correct...

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    $14.70 - $24.50
    $14.70 - $24.50
    $14.70
    $13.00 - $19.00
    $13.00 - $19.00
    $13.00
    Save up to $5.50 Save $0.00
  • Bluelab pH Pen
    Save $29.14 Save $0.00
    $126.14
    $126.14 - $126.14
    $126.14
    $97.00
    $97.00 - $97.00
    $97.00

    Bluelab pH Pen

    Bluelab

    The ultimate handy solution for measuring pH! Plants get their nutrition from minerals but they can only get all the right minerals they need if ce...

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    $126.14
    $126.14 - $126.14
    $126.14
    $97.00
    $97.00 - $97.00
    $97.00
    Save $29.14 Save $0.00
  • Save $3.09 Save $0.00
    $13.09
    $13.09 - $13.09
    $13.09
    $10.00
    $10.00 - $10.00
    $10.00

    Cutting Edge Solutions pH Up

    Cutting Edge Solutions

    CES pH Up™Concentrated pH adjustment liquid, alkaline buffer raises water and nutrient solution pH. Highly concentrated, use conservatively. Slowly...

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    $13.09
    $13.09 - $13.09
    $13.09
    $10.00
    $10.00 - $10.00
    $10.00
    Save $3.09 Save $0.00
  • Save $3.99 Save $0.00
    $18.99
    $18.99 - $18.99
    $18.99
    $15.00
    $15.00 - $15.00
    $15.00

    Luster Leaf Digital Soil pH Meter

    Luster Leaf

    Digital results from 3.5 to 9.0. Instructions and plant pH preference list included.

    $18.99
    $18.99 - $18.99
    $18.99
    $15.00
    $15.00 - $15.00
    $15.00
    Save $3.99 Save $0.00
  • Save $51.99 Save $0.00
    $178.99
    $178.99 - $178.99
    $178.99
    $127.00
    $127.00 - $127.00
    $127.00

    Apera GroStar GS4 pH/EC Combo Pen

    GroStar

    AI21040 - GroStar GS4 pH/EC/500ppm/700ppm & Temp (5-in-1) Combo PenLab grade instruments designed specifically for growers!Includes: • 2-year w...

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    $178.99
    $178.99 - $178.99
    $178.99
    $127.00
    $127.00 - $127.00
    $127.00
    Save $51.99 Save $0.00
  • Save $29.99 Save $0.00
    $115.99
    $115.99 - $115.99
    $115.99
    $86.00
    $86.00 - $86.00
    $86.00

    Apera GroStar GS1 pH Pen

    GroStar

    AI11010 - GroStar GS1 pH PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty (prob...

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    $115.99
    $115.99 - $115.99
    $115.99
    $86.00
    $86.00 - $86.00
    $86.00
    Save $29.99 Save $0.00
  • Save $32.99 Save $0.00
    $113.99
    $113.99 - $113.99
    $113.99
    $81.00
    $81.00 - $81.00
    $81.00

    Apera GroStar GS3 EC Pen

    GroStar

    AI11030 - GroStar GS3 EC/PPM/Temp PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warra...

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    $113.99
    $113.99 - $113.99
    $113.99
    $81.00
    $81.00 - $81.00
    $81.00
    Save $32.99 Save $0.00
  • Save $74.99 Save $0.00
    $256.99
    $256.99 - $256.99
    $256.99
    $182.00
    $182.00 - $182.00
    $182.00

    Apera GroStar GS2 Soil pH Pen

    GroStar

    AI31020 - GroStar GS2 Soil pH PenLab grade instruments designed specifically for growers!Includes: • 2-year warranty (instrument)• 1-year warranty ...

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    $256.99
    $256.99 - $256.99
    $256.99
    $182.00
    $182.00 - $182.00
    $182.00
    Save $74.99 Save $0.00
  • Save $2.99 Save $0.00
    $11.80
    $11.80 - $11.80
    $11.80
    $8.81
    $8.81 - $8.81
    $8.81

    2-Way pH & Moisture Meter

    Active Air

    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 1...

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    $11.80
    $11.80 - $11.80
    $11.80
    $8.81
    $8.81 - $8.81
    $8.81
    Save $2.99 Save $0.00
  • $60.00 - $60.00
    $60.00
    $60.00
    $60.00 - $60.00
    $60.00

    Hanna GroLine Hydroponics pH Tester

    Hanna Instruments

    The HI98115 is a GroLine pH tester with advanced features for the measurement of pH in hydroponic nutrient solutions. The HI98115 is a very simple ...

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    $60.00 - $60.00
    $60.00
    $60.00
    $60.00 - $60.00
    $60.00
  • $279.00 - $279.00
    $279.00
    $279.00
    $279.00 - $279.00
    $279.00

    Hanna GroLine Waterproof Portable pH/EC/TDS Meter

    Hanna Instruments

    Designed to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialize...

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    $279.00 - $279.00
    $279.00
    $279.00
    $279.00 - $279.00
    $279.00
  • $395.00 - $395.00
    $395.00
    $395.00
    $395.00 - $395.00
    $395.00

    Hanna GroLine Monitor

    Hanna Instruments

    The HI981420 GroLine Monitor for Hydroponic Nutrients provides around-the-clock, continuous monitoring of pH, conductivity (EC & TDS), and temp...

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    $395.00 - $395.00
    $395.00
    $395.00
    $395.00 - $395.00
    $395.00
  • Bluelab Original Truncheon Meter
    Save $36.94 Save $0.00
    $157.94
    $157.94 - $157.94
    $157.94
    $121.00
    $121.00 - $121.00
    $121.00

    Bluelab Original Truncheon® Nutrient Meter

    Bluelab

    With its super tough, high-quality, fully waterproof design, no calibration required, daylight readable blue LEDs and no on/off buttons to...

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    $157.94
    $157.94 - $157.94
    $157.94
    $121.00
    $121.00 - $121.00
    $121.00
    Save $36.94 Save $0.00