pH Meters

BlueLab Guardian Monitor
free shipping

BlueLab Guardian Monitor

$319.65 $364.00
BlueLab Combo Meter, PPM & PH
free shipping

BlueLab Combo Meter, PPM & PH

$259.35 $298.00
Bluelab Meter Carry Case Bluelab Meter Carry Case
free shipping over $149

Bluelab Meter Carry Case

$22.50 $25.00
BlueLab Soil pH Meter w/ Probe
free shipping

BlueLab Soil pH Meter w/ Probe

$199.75 $245.00
BlueLab Grower's Toolbox
free shipping

BlueLab Grower's Toolbox

$179.95 $199.00
Bluelab pH Pen
free shipping

Bluelab pH Pen

$99.85 $112.50
Bluelab Connect Range Extender
free shipping

Bluelab Connect Range Extender

$142.75 $164.00
Bluelab Connect Stick
free shipping

Bluelab Connect Stick

$132.40 $151.70
Bluelab Guardian Connect
free shipping

Bluelab Guardian Connect

$393.00 $450.00
Bluelab® pH Controller Connect
free shipping

Bluelab® pH Controller Connect

$499.85 $629.99
Hanna GroChek pH/EC/TDS/C Portable meter
free shipping

Hanna GroChek pH/EC/TDS/C Portable meter

$239.75 $283.95
Hanna GroChek pH/EC/TDS/Temp. Combo
free shipping

Hanna GroChek pH/EC/TDS/Temp. Combo

$209.90 $246.95
Bluelab Replacement Probes for BlueLab Models
free shipping

Bluelab Replacement Probes for BlueLab Models

$69.00 $102.99
HM Replacement pH Sensor PH-200
free shipping over $149

HM Replacement pH Sensor PH-200

$40.45 $44.95
HM Digital pH 80
free shipping

HM Digital pH 80

$59.90 $62.95
HM Digital Waterproof pH Meter Model PH-200
free shipping

HM Digital Waterproof pH Meter Model PH-200

$89.85 $114.95
Bluelab Soil pH Pen Bluelab Soil pH Pen
free shipping

Bluelab Soil pH Pen

$161.55 $185.00
Hanna GroChek replacement probe for HI9813-6
free shipping

Hanna GroChek replacement probe for HI9813-6

$134.95 $156.99
Hanna Instruments GroChek pH & TDS Combo Continuous Reading Meter
free shipping

Hanna Instruments GroChek pH & TDS Combo Continuous Reading Meter

$214.95 $249.99
Oakton Waterproof EcoTester pH1
free shipping

Oakton Waterproof EcoTester pH1

$67.05 $69.95
Perfect pH (35 Gal Model) Perfect pH (35 Gal Model)
free shipping

Perfect pH (35 Gal Model)

$99.00 $99.00
Perfect pH (70 Gal Model) Perfect pH (70 Gal Model)
free shipping

Perfect pH (70 Gal Model)

$149.00 $149.00
Perfect pH Cleaning Solution, 16 oz
free shipping

Perfect pH Cleaning Solution, 16 oz

$32.00 $34.99
Oakton Waterproof pHTestr 10
free shipping

Oakton Waterproof pHTestr 10

$120.55 $133.95
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