Meters & Controllers

Hanna Instruments HI7004L pH 4.0 Buffer Calibration Solution - 500 mL - NIST Traceable

In Stock: 7

$29.69

Hanna Instruments HI7061M General Purpose Electrode Cleaning Solution - 230 mL

In Stock: 3

$25.64

Plastair WROX Color-Changing Plant Moisture Indicator - 3-Pack

In Stock: 12

$93.48 / $7.79 per unit
(minimum purchase of 12)

Hanna Instruments HI9813-51 Portable pH/EC/TDS Meter

Out of stock

$364.49

Gardener Select 3-in-1 Moisture, pH, and Light Meter

In Stock: 1632

$157.08 / $13.09 per unit
(minimum purchase of 12)

HM Digital HM-100 Continuous pH/EC/TDS/Temp Monitor - Power Cord Included

In Stock: 142

$137.88 $296.79 -54%

Gardener Select Moisture Meter - Blue

In Stock: 4552

$128.40 / $10.70 per unit
(minimum purchase of 12)

Gardener Select 2-in-1 Moisture and pH Meter

In Stock: 4932

$136.20 / $11.35 per unit
(minimum purchase of 12)

HM Digital HM-200 Portable pH/EC/TDS/Temp Monitor - Batteries Included

In Stock: 153

$106.13 $273.17 -61%

Gardener Select pH Meter - Blue

In Stock: 2732

$117.72 / $9.81 per unit
(minimum purchase of 12)

Mosser Lee Soil Master Moisture, Light, and pH Meter

In Stock: 264

$257.52 / $21.46 per unit
(minimum purchase of 12)

HM Digital DM-3 Commercial Inline Dual TDS Monitor

In Stock: 63

$30.48 $78.45 -61%

Mosser Lee Soil Master Moisture Meter

In Stock: 36

$225.00 / $18.75 per unit
(minimum purchase of 12)

HM Digital COM-300L Waterproof Professional Series pH/EC/TDS/Temp Meter - 15.4-in

In Stock: 40

$81.34 $209.36 -61%

Bluelab Guardian Monitor Inline - Wi-Fi

In Stock: 4

$628.75 $675.00 -7%

Bluelab pH 4.0 Calibration Solution Sachets - 18 mL - 30-Count

In Stock: 4

$49.00

HM Digital LBS-10 LeakBlock Sensor - 6 GPM Max

In Stock: 38

$23.09 $59.40 -61%

Bluelab pH 7.0 Calibration Solution Sachets - 18 mL - 30-Count

In Stock: 4

$49.00

HM Digital COM-300 Waterproof Professional Series pH/EC/TDS/Temp Meter - 7.3-in

In Stock: 344

$144.16 $171.38 -16%

HM Digital SP-C2 Replacement TDS/EC Sensor for HM-200

In Stock: 20

$23.40 $48.17 -51%