Meters & Controllers

Hort2O Digital Hygro-Thermometer - 9.8-ft Sensor Cable - 32 to 122°F - 20 to 98% RH

In Stock: 60

$19.99

Bluelab pH 4.0 Calibration Solution - 250 mL

In Stock: 48

$69.00 / $11.50 per unit
(minimum purchase of 6)

Dilution Solutions EC Calibration Solution - 1000 PPM NaCl

In Stock: 17

$7.29 $8.95 -19%

Bluelab Conductivity Standard Solution - 2.77 EC - 250 mL

In Stock: 108

$69.00 / $11.50 per unit
(minimum purchase of 6)

Sunpack Tri-Meter for Moisture, Light, and pH

Out of stock

$101.30 / $10.13 per unit
(minimum purchase of 10)

Bluelab pH 4.0 Calibration Solution - 500 mL

In Stock: 6

$124.98 / $20.83 per unit
(minimum purchase of 6)

Hanna Instruments HI7031L Standard Conductivity Calibration Solution - 500 mL - 1413 µS/cm - NIST Traceable

In Stock: 7

$29.69

Bluelab Conductivity Standard Solution - 2.77 EC - 120 mL

In Stock: 63

$128.16 / $21.36 per unit
(minimum purchase of 6)

Bluelab Meter Carrying Case - Meter Not Included

In Stock: 163

$23.45

Bluelab Connect Stick 2 for Connect Devices - Wireless Data to Smartphone

In Stock: 164

$69.66

Dilution Solutions Pro HM Digital pH Meter - 7.3-in

In Stock: 321

$94.17 $99.95 -6%

Bluelab Conductivity Standard Solution - 2.77 EC - 500 mL

In Stock: 99

$124.98 / $20.83 per unit
(minimum purchase of 6)

Bluelab pH Probe KCl Storage Solution - 250 mL

In Stock: 116

$166.08 / $27.68 per unit
(minimum purchase of 6)

Dilution Solutions EC Calibration Solution Packets - 20-Count

In Stock: 224

$12.98 $24.95 -48%

Bluelab Connect Range Extender for Connect Devices and Connect Stick

In Stock: 10

$95.99

Hydrofarm Active Air 3-Way Meter - Moisture, Light, and pH

In Stock: 1

$7.39 $14.99 -51%

Dilution Solutions pH Calibration and Storage Solution Packets - 20-Count

In Stock: 89

$23.53 $24.95 -6%

Bluelab Probe Care Kit for pH and Conductivity Probes

In Stock: 60

$33.53

Hanna Instruments HI7007L pH 7.0 Buffer Calibration Solution - 500 mL - NIST Traceable

In Stock: 2

$29.69

Hanna Instruments HI70300L Electrode Storage Solution - 500 mL - For pH Electrode Preservation

In Stock: 3

$29.69