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BlueLab
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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 expens
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GH pH Test Kit 1 oz [24]
$6.98
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Luster Leaf Rapitest Digital Soil pH Meter
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Rapitest Digital Soil pH Meter
$16.98
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BlueLab Bluelab Calibration Sol 2.77EC 250mL
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Bluelab Calibration Sol 2.77EC 250mL
$8.87
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Dome EP Thermo / Hygrometer Large
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EP Thermo / Hygrometer Large
$22.79
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HM Digital Meters HM Digital pH 80 Meter
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HM Digital pH 80 Meter
$47.25
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This Base solution is formulated using potassium hydroxide and potassium carbonate. Add a little at a time when your nutrient pH is too low in order to raise the pH to the proper level.
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GH pH Up
$9.48
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Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature. Three different calibration options (KCl, 442TM, NaCl), each with its own non-linear conversion factor. Automatic Temperature Compensation (ATC) using three temperature c
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HM Digital EC/TDS Com-100 Meter
$57.44
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HM Digital Meters Replacement pH Sensor PH-200
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Replacement pH Sensor PH-200
$37.46
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HydroMaster Digital tester makes monitoring water easier than ever by reading the levels that matter most and providing accurate readings that you can depend on. Continuous pH/EC/TDS/Temp monitor with rechargeable battery. Portable, wall mount or benchtop
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HM Hydromaster Combo Meter HM-500
$268.75
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The Bluelab Guardian Monitor Connect, Bluelab Connect Stick, Bluelab Connect Range Extender and Bluelab Connect Software. The Bluelab Guardian Monitor Connect can connect wirelessly to a computer at the grow site via the Bluelab Connect Stick, which enabl
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Bluelab Connect Range Extender
$156.83
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Our brainy pH Controller Connect constantly monitors and fine-tunes the pH levels for you. But more than that, it wirelessly data logs to your computer too, putting continuous information at your fingertips. Use the data to make system changes faster for
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Bluelab pH Controller
$568.00
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Milwaukee Instruments Milwaukee SE600 Replacement Pr
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Milwaukee SE600 Replacement Pr
$84.74
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HM Digital Meters HM Digital pH Electrode Storage Solution
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HM Digital pH Electrode Storage Solution
$5.22
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BlueLab Bluelab Connect Stick
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Bluelab Connect Stick
$118.58
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"pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope).Calibration Solution should be stored in a cool place out
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Bluelab ph 4.0 Calibration Solution
$14.04
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"pH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7.0 first (buffer) then to pH 4.0 (slope).Calibration Solution should be stored in a cool place out
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Bluelab ph 7.0 Calibration Solution
$14.04
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Hydrofarm pH 7.01 Calibration Sol. Sachet single
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pH 7.01 Calibration Sol. Sachet single
$1.40
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Hydrofarm pH 4.01 Calibration Sol. Sachet single
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pH 4.01 Calibration Sol. Sachet single
$1.05
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Hanna Instruments Hanna GroChek pH/EC/TDS/C Portable Meter
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Hanna GroChek pH/EC/TDS/C Portable Meter
$219.74
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BlueLab Bluelab LEAP pH Replacement Probe
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Bluelab LEAP pH Replacement Probe
$104.82
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HM Digital Meters HM Digital Waterproof pH Meter PH-200
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HM Digital Waterproof pH Meter PH-200
$81.53
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Luster Leaf Rapitest Soil Test pH N,P,K
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Rapitest Soil Test pH N,P,K
$17.07
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BlueLab Bluelab Replacement pH Probe
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Bluelab Replacement pH Probe
$64.19
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HM Digital Meters HM Digital EC/TDS Com-80 Meter
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HM Digital EC/TDS Com-80 Meter
$39.98
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![General Hydroponics GH pH Test Kit 1 oz [24]](https://cdn.shoplightspeed.com/shops/607958/files/1565012/262x276x2/general-hydroponics-gh-ph-test-kit-1-oz-24.jpg "General Hydroponics GH pH Test Kit 1 oz [24]")
