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pH/EC/TDS Meters & Solutions

Sale -12%
Hanna Instruments GroLine Calibration Sol 4.01 230 ML

Hanna Instruments GroLine Calibration Sol 4.01 230 ML

HI7004-023 is a high quality pH 4.01 calibration buffer that is NIST traceable a..
$16.50 $14.49
Sale -15%
Bluelab Bluelab Pen PPM

Bluelab Bluelab Pen PPM

Bluelab® ppm Pen — Now Bluelab® Conductivity Pen
$104.94 $89.20
Sale 0%
General Hydroponics GH pH 7.01 Solution

General Hydroponics GH pH 7.01 Solution

General Hydroponics® Meter Calibration Solutions
$23.84 $23.84
Sale -41%
Nectar for the Gods NG Olympus Up

Nectar for the Gods NG Olympus Up

Olympus Up
$144.99 $86.13
Sale -8%
Nectar for the Gods NG Hades Down

Nectar for the Gods NG Hades Down

Hades Down
$69.99 $64.59
Sale -12%
Hanna Instruments GroLine EC/TDS Tester GroLine EC/TDS Tester

Hanna Instruments GroLine EC/TDS Tester GroLine EC/TDS Tester

The HI98318 is our latest pocket meter for measuring the EC/TDS of a hydroponic ..
$85.00 $74.99
Sale 3%
Cutting Edge Solutions CES PH Up

Cutting Edge Solutions CES PH Up

CES pH Up™

Concentrated pH adjustment liquid, alkaline buffer raises water ..
$32.50 $33.60
Sale -12%
Bluelab Bluelab 7.0

Bluelab Bluelab 7.0

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

Bluelab Bluelab 4.0

Bluelab® pH 4.0 Calibration Solution
$10.50 $8.93
Sale -15%
Emerald Harvest Emerald Harvest pH Up Gallon/3.79 Liter

Emerald Harvest Emerald Harvest pH Up Gallon/3.79 Liter

Keep your nutrient solution in the sweet spot with Emerald Harvest® pH Up. A pH..
$81.51 $69.28
Sale -15%
Bluelab Bluelab Storage Solution

Bluelab Bluelab Storage Solution

Bluelab® pH Probe KCI Storage Solution
$24.50 $20.83
Sale -12%
Hanna Instruments Groline Probe Inline

Hanna Instruments Groline Probe Inline

The HI1285-9 inline multiparameter probe measures pH, EC/TDS, and temperature in..
$290.00 $254.99
Sale -12%
Hanna Instruments GroLine Cleaning Solution 230 ML

Hanna Instruments GroLine Cleaning Solution 230 ML

HI7061-023 is the GroLine general purpose cleaning solution that can be used for..
$16.50 $14.49
Sale -45%
Advanced Nutrients AN pH Up

Advanced Nutrients AN pH Up

PH UP
When Your pH Is Too Low, You Need pH-Up
-- The Highest Concentration in ..
$180.08 $99.04
Sale -45%
Advanced Nutrients AN pH Down

Advanced Nutrients AN pH Down

PH DOWN
When Your pH Is Too High, You Need pH-Down
-- The Highest Concentratio..
$180.08 $99.04
Sale -15%
Bluelab Bluelab Truncheon Meter EC/PPM

Bluelab Bluelab Truncheon Meter EC/PPM

Bluelab Original Truncheon® Nutrient Meter
$157.94 $134.25
Sale -15%
Bluelab Bluelab Probe Care Kit pH Kit

Bluelab Bluelab Probe Care Kit pH Kit

Bluelab® Probe Care Kit for Conductivity Probes
$23.32 $19.82
Sale -15%
Bluelab Bluelab Multimedia Meter pH Meter

Bluelab Bluelab Multimedia Meter pH Meter

Bluelab® Multimedia pH Meter with Leap™ pH Probe
$295.74 $251.38
Sale -15%
Bluelab Bluelab Inline pH Probe

Bluelab Bluelab Inline pH Probe

Bluelab® Guardian Monitor Connect In-Line
$210.94 $179.30
Sale -15%
Bluelab Bluelab Probe Leap

Bluelab Bluelab Probe Leap

Bluelab Leap pH Probe (Probe Only)
$136.74 $116.23
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