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pH/EC/TDS Meters & Solutions

General Hydroponics GH pH Up
Sale-5%

General Hydroponics GH pH Up

General Hydroponics® pH Up Liquid
$35.87 $34.09
General Hydroponics Mad Farmer pH Test
Sale-15%

General Hydroponics Mad Farmer pH Test

General Hydroponics® pH Test Kit
$9.59 $8.15
General Hydroponics GH pH Down
Sale-15%

General Hydroponics GH pH Down

General Hydroponics® pH Down Liquid
$14.39 $12.23
General Hydroponics GH pH 7.01 Solution
Sale0%

General Hydroponics GH pH 7.01 Solution

General Hydroponics® Meter Calibration Solutions
$23.84 $23.84
Bluelab Bluelab Meter Combo
Sale-15%

Bluelab Bluelab Meter Combo

Bluelab® Combo Meter
$348.74 $296.43
Bluelab Bluelab Conductivity Care Kit Kit
Sale-15%

Bluelab Bluelab Conductivity Care Kit Kit

Bluelab Nutrient Probe Care Kit Conductivity
$30.74 $26.13
Bluelab Bluelab Probe Leap
Sale-15%

Bluelab Bluelab Probe Leap

Bluelab Leap pH Probe (Probe Only)
$136.74 $116.23
Bluelab Bluelab Pen pH
Sale-15%

Bluelab Bluelab Pen pH

Bluelab® pH Pen
Measures pH and temperature.
$126.14 $107.22
Cutting Edge Solutions CES PH Up
Sale3%

Cutting Edge Solutions CES PH Up

CES pH Up™

Concentrated pH adjustment liquid, alkaline buffer raises water and nutrient solution pH. Highly concentrated, use conservatively. Slowly add to pure water or nutrient solution, at small intervals. Note beginning reading and then test pH. Re
$32.50 $33.60
Bluelab Bluelab Meter Guardian
Sale-15%

Bluelab Bluelab Meter Guardian

Bluelab® Guardian Monitor
Adjustable brightness display. Large easy-to-read, plant-safe green LED displays.
$445.20 $378.42
Bluelab Bluelab Commercial Truncheon
Sale-15%

Bluelab Bluelab Commercial Truncheon

Bluelab Commercial Truncheon® Nutrient Meter
$157.94 $134.25
Bluelab Bluelab 7.0
Sale-12%

Bluelab Bluelab 7.0

Bluelab® pH 7.0 Calibration Solution
$1.92 $1.69
Bluelab Bluelab 4.0
Sale-15%

Bluelab Bluelab 4.0

Bluelab® pH 4.0 Calibration Solution
$18.90 $16.07
Bluelab Bluelab 2.77
Sale-15%

Bluelab Bluelab 2.77

Bluelab® 2.77 EC Conductivity Standard Solution
$10.50 $8.93
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