pH/EC/TDS Meters & Solutions

Bluelab Pen PPM

Bluelab® ppm Pen — Now Bluelab® Conductivity Pen

$104.94 $89.20

Bluelab Multimedia Meter pH Meter

Bluelab® Multimedia pH Meter with Leap™ pH Probe

$295.74 $251.38

Bluelab Probe Leap

Bluelab Leap pH Probe (Probe Only)

$136.74 $116.23

Bluelab Pen pH

Bluelab® pH Pen
Measures pH and temperature.

$126.14 $107.22

Bluelab Meter Guardian

Bluelab® Guardian Monitor
Adjustable brightness display. Large easy-to-read, plant-safe green LED displays.

$445.20 $378.42

Bluelab 2.77

Bluelab® 2.77 EC Conductivity Standard Solution

$18.90 $16.07

GH pH Up

General Hydroponics® pH Up Liquid

$35.87 $34.09

GH pH Down

General Hydroponics® pH Down Liquid

$35.87 $30.49