pH Pen Bluelab

This clever little handheld pen will help you manage the success of your crops. The pH pen provides a pH reading of the solution so you know that the nutrients will be made available to your plants. Comes with a 1 year limited written guarantee with proof of purchase.

 Features:

• measures pH and temperature ( C or F)
• Automatic temperature compensation (ATC)
• Double junction probe (not replaceable)
• Successful pH calibration indicator
• Holding reading function
• Fully waterproof
• Low battery indicator
• Backlit LCD display
• Auto off function