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Meters & Controllers

Bluelab pH Pen Meter - pH and Temperature
Out of stock
$99.00
Bluelab Probe Care Kit for pH Probes
In Stock: 23
$25.00
Bluelab Probe Care Kit for Conductivity Probes
In Stock: 10
$19.00
Bluelab Multimedia pH Meter for Soil, Coco, Rockwool, and Solution - 6.5-ft Probe Cable
In Stock: 29
$143.71 $209.00 -31%
Luster Leaf Rapitest Digital Soil pH Meter - 3.5 to 9.0 pH Range
In Stock: 263
$255.48 / $21.29 per unit
(minimum purchase of 12)
GroStar GS4 5-in-1 Digital pH/EC/TDS/Temperature Meter
In Stock: 69
$141.25 $178.99 -21%
Sunpack 2-Function Plant Sensor Meter for Soil Moisture and pH
Out of stock
$151.40 / $15.14 per unit
(minimum purchase of 10)
GroStar GS2 Soil pH/Temperature Meter
In Stock: 115
$202.81 $256.99 -21%
Milwaukee Instruments MA871 Digital Brix Refractometer - 0-85% Range
Out of stock
$135.25 $199.00 -32%
Bluelab pH Probe Inline - 3/4-in NPT - For Guardian Monitor Connect Inline
Out of stock
$203.47 $209.00 -3%
Bluelab Commercial Truncheon Nutrient Meter - EC, CF, and PPM
In Stock: 5
$105.00
Bluelab Soil pH Pen for Soil, Coco Coir, and Potting Mixes - Battery Included
Out of stock
$193.73 $199.00 -3%
P3 International Save a Drop Water Meter
In Stock: 1818
$19.27 $19.95 -3%
Bluelab Replacement pH Probe for Combo Meter
Out of stock
$90.00
Bluelab Conductivity Pen Meter - Conductivity and Temperature
In Stock: 1
$99.00
Bluelab Combo Meter Plus - pH, Conductivity, and Temperature
In Stock: 8
$371.66 $399.00 -7%
Active Air 3-Way Meter for pH, Light, and Moisture
In Stock: 1517
$10.93 $13.09 -17%
Hydrofarm Active Air MGMP1 2-Way Moisture and pH Meter
In Stock: 10
$11.63 $13.99 -17%
Milwaukee Instruments pH600 Digital pH Pen
Out of stock
$34.00
GroStar pH Probe Maintenance Kit
In Stock: 74
$23.17 $23.99 -3%
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