Bluelab PH Pen

A hand held digital pH meter for use in hydroponics or testing water.
Takes 1 x AAA battery (included with purchase) and includes KCI storage solution to ensure longevity and accuracy.
Made by Bluelab (N.Z), which insures top quality.
Reads 0.0 to 14.0 pH range

Highly accurate.
Features:
Measures pH and temperature
Selectable units for temperature
Backlit LCD display
Double junction probe (not replaceable)
Hold reading funtion
Low battery indicator
Fully water proof
Auto off function
Automatic temerature compensation (ATC)
Displays the pH reading in figures, so there is no need to compare to a colour chart.