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Bluelab pH Pen
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Bluelab pH Pen

The ultimate handy solution for measuring pH and temperature!
FREE shipping Worldwide
On all products to any location in the world, minimum purchase $40

The ultimate handy solution for measuring pH and temperature!

Plants get their nutrient from minerals but they can only get all the right minerals they need if certain conditions are right. Think of nutrients like a lock. pH is the key. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in pH.

The Bluelab pH Pen also measures the temperature of the solution, as root health is vital to the success of a crop. Temperature affects the growth rate and structure of a plant so a solution temperature of 18 - 22˚C or 65 - 72˚F is recommended.

The hand held pH pen provides a compact quick and handy way to manage the success of your crop to ensure maximum uptake of nutrients.

Teamed with our Bluelab ppm or EC Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health.

Now isn't that Handy!


  • Measures pH and temperature
  • Selectable units for temperature
  • Backlit LCD display
  • Double junction probe (not replaceable)
  • Successful pH calibration indicator
  • Hold reading function
  • Low battery indicator
  • Fully waterproof
  • Auto off function
  • Automatic temperature compensation
  • 1 x AAA alkaline battery included
1 year guarantee for Bluelab pH Pen
(proof of purchase is required)
Applications-Aquaculture Applications-Aquaponics Applications-Floriculture Applications-Greenhouse Applications-Hydroponics Applications-Indstry Applications-Pools
Aquaculture Aquaponics Floriculture Greenhouse Hydroponics Industry Pools
pH pen manuals and care

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  English  - for serial number before 1511-0001

Probe care:   Bluelab pH Pen Cleaning Instructions
Product video
See how to set up the pH pen before the first use.
Visit our Video Library to view the Bluelab pH Pen cleaning and calibration video.

Technical specifications and brochures

Bluelab pH Pen Technical Specifications

Bluelab EC and pH Pen brochure                   Bluelab ppm and pH Pen brochure


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