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- PH/EC/PPM/TDS Meters
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Collection: Meters & Solutions

Shop our wide variety of water testing meters and calibration solutions to keep your garden's PH/EC/PPM/TDS in proper ranges.

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Active Air (2 products)
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Chemboys (2 products)
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Meters & Calibration Solutions (88 products)
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91 products

Bluelab pH Probe KCl Storage Solution

Sale

Bluelab pH Probe KCl Storage Solution

Regular price From $14.00 USD

Regular price ~~$14.83 USD~~ Sale price From $14.00 USD
Unit price per

Sale
Bluelab 4.0 pH Calibration Solution

Bluelab 4.0 pH Calibration Solution

Regular price From $2.00 USD

Regular price ~~$1.80 USD~~ Sale price From $2.00 USD
Unit price per
Bluelab 7.0 pH Calibration Solution

Bluelab 7.0 pH Calibration Solution

Regular price From $2.00 USD

Regular price ~~$1.80 USD~~ Sale price From $2.00 USD
Unit price per
General Hydroponics pH Control Kit

Sale

General Hydroponics pH Control Kit

Regular price $14.00 USD

Regular price ~~$22.98 USD~~ Sale price $14.00 USD
Unit price per

Sale
Bluelab Guardian Monitor In-Line

Sale

Bluelab Guardian Monitor In-Line

Regular price From $180.00 USD

Regular price ~~$210.94 USD~~ Sale price From $180.00 USD
Unit price per

Sale
Bluelab Guardian Monitor

Sale

Bluelab Guardian Monitor

Regular price From $30.00 USD

Regular price ~~$30.74 USD~~ Sale price From $30.00 USD
Unit price per

Sale
General Hydroponics PRO pH

Sale

General Hydroponics PRO pH

Regular price From $96.00 USD

Regular price ~~$124.86 USD~~ Sale price From $96.00 USD
Unit price per

Sale
Front Row Ag Clean Up

Sale

Front Row Ag Clean Up

Regular price From $60.00 USD

Regular price ~~$96.00 USD~~ Sale price From $60.00 USD
Unit price per

Sale
Hanna GroLine Hydroponics pH Tester

Hanna GroLine Hydroponics pH Tester

Regular price $60.00 USD

Regular price ~~$60.00 USD~~ Sale price $60.00 USD
Unit price per
Hanna GroLine Waterproof Portable pH/EC/TDS Combo Meter

Hanna GroLine Waterproof Portable pH/EC/TDS Combo Meter

Regular price $299.00 USD

Regular price ~~$299.00 USD~~ Sale price $299.00 USD
Unit price per
Bluelab Soil pH Pen

Sale

Bluelab Soil pH Pen

Regular price $180.00 USD

Regular price ~~$210.94 USD~~ Sale price $180.00 USD
Unit price per

Sale
General Hydroponics pH Down Liquid

Sale

General Hydroponics pH Down Liquid

Regular price From $14.00 USD

Regular price ~~$14.39 USD~~ Sale price From $14.00 USD
Unit price per

Sale
Bluelab Sample Tube And Fittings

Sale

Bluelab Sample Tube And Fittings

Regular price $216.00 USD

Regular price ~~$239.00 USD~~ Sale price $216.00 USD
Unit price per

Sale
Bluelab pH & Conductivity Starter Pack

Sale

Bluelab pH & Conductivity Starter Pack

Regular price $222.00 USD

Regular price ~~$249.00 USD~~ Sale price $222.00 USD
Unit price per

Sale
Hanna GroLine Direct Soil EC Tester Pen

Hanna GroLine Direct Soil EC Tester Pen

Regular price $160.00 USD

Regular price ~~$160.00 USD~~ Sale price $160.00 USD
Unit price per
Hanna GroLine Storage Solution

Hanna GroLine Storage Solution

Regular price From $20.00 USD

Regular price ~~$20.00 USD~~ Sale price From $20.00 USD
Unit price per
Bluelab pH Pen

Sale

Bluelab pH Pen

Regular price $108.00 USD

Regular price ~~$119.00 USD~~ Sale price $108.00 USD
Unit price per

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

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

Regular price $215.00 USD

Regular price ~~$215.00 USD~~ Sale price $215.00 USD
Unit price per
Apera GroStar GS4 pH/EC Combo Pen

Sale

Apera GroStar GS4 pH/EC Combo Pen

Regular price $154.00 USD

Regular price ~~$178.99 USD~~ Sale price $154.00 USD
Unit price per

Sale
General Hydroponics pH Up Liquid

Sale

General Hydroponics pH Up Liquid

Regular price From $14.00 USD

Regular price ~~$14.39 USD~~ Sale price From $14.00 USD
Unit price per

Sale
HM Digital PH-80 pH/Temperature Meter

Sale

HM Digital PH-80 pH/Temperature Meter

Regular price $43.00 USD

Regular price ~~$46.50 USD~~ Sale price $43.00 USD
Unit price per

Sale
Athena Pro Balance

Sale

Athena Pro Balance

Regular price From $77.00 USD

Regular price ~~$110.00 USD~~ Sale price From $77.00 USD
Unit price per

Sale
Hanna GroLine Inline Monitor

Hanna GroLine Inline Monitor

Regular price $499.00 USD

Regular price ~~$499.00 USD~~ Sale price $499.00 USD
Unit price per
Hanna GroLine Tester Replacement Probe

Hanna GroLine Tester Replacement Probe

Regular price $80.00 USD

Regular price ~~$80.00 USD~~ Sale price $80.00 USD
Unit price per

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