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pH/EC/TDS Meters & Solutions

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 -12%
Hanna Instruments GroLine Quick Cal Solution 230 ML

Hanna Instruments GroLine Quick Cal Solution 230 ML

HI5036-023 is a quick calibration solution for use with Hanna's GroLine pH and/o..
$16.50 $14.49
Sale -15%
Bluelab Bluelab Truncheon Meter EC/PPM

Bluelab Bluelab Truncheon Meter EC/PPM

Bluelab Original Truncheon® Nutrient Meter
$157.94 $134.25
Sale -40%
Emerald Harvest Emerald Harvest pH Down

Emerald Harvest Emerald Harvest pH Down

Emerald Harvest® pH Down
Keep your nutrient solution in the sweet spot with Em..
$171.84 $103.95
Sale -11%
Hanna Instruments GroLine Waterproof Tester Combo

Hanna Instruments GroLine Waterproof Tester Combo

GroLine Hydroponic Waterproof Pocket pH/EC/TDS/Temperature Tester..
$225.00 $199.99
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 -15%
Bluelab Bluelab Inline pH Probe

Bluelab Bluelab Inline pH Probe

Bluelab® Guardian Monitor Connect In-Line
$210.94 $179.30
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 -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 -11%
Hanna Instruments Groline Monitor Inline

Hanna Instruments Groline Monitor Inline

The HI981421 GroLine Monitor for Hydroponic Nutrients provides around-the-clock,..
$505.00 $449.99
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 Meter Combo

Bluelab Bluelab Meter Combo

Bluelab® Combo Meter
$348.74 $296.43
Sale -15%
Bluelab Bluelab 4.0

Bluelab Bluelab 4.0

Bluelab® pH 4.0 Calibration Solution
$18.90 $16.07
Sale -15%
General Hydroponics Mad Farmer pH Test

General Hydroponics Mad Farmer pH Test

General Hydroponics® pH Test Kit
$9.59 $8.15
Sale -19%
GroStar GroStar GS4 pH/EC Combo Pen GS4

GroStar GroStar GS4 pH/EC Combo Pen GS4

Features:
• Measures pH, conductivity (EC and 500ppm/700ppm) and temperature ..
$178.99 $144.49
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 Probe Inline

Hanna Instruments Groline Probe Inline

The HI1285-9 inline multiparameter probe measures pH, EC/TDS, and temperature in..
$290.00 $254.99
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