PH Pal Plus Pen

PH Pal Plus Pen

What is pH?


pH is an abbreviation for Potential of Hydrogen. It is the measure of how acidic or alkaline a solution is. 

pH is measured from 0 to 14 where 1 is the most acidic, 7 is neutral and 14 is the most alkaline. 

Most plants have an optimal pH of around 6 - 6.5


Why do we measure pH levels in hydroponics?


Plants will only uptake nutrients when the pH of the nutrient solution is within a certain range. 

The chart below shows how each element becomes more or less available to the plant as the pH changes. 

If the pH of the nutrient solution is outside of that range the nutrients will be locked out, or in other words the plant will be unable to absorb the food it needs. This could result in stunted growth or even death.


The pH PAL Plus tester is a user-friendly and simple to use pH meter that incorporates an automatic calibration feature. At the touch of a button, the instrument will automatically re-calibrate itself when used in conjunction with a 7.00 pH buffer solution.

The pH Pal Plus tester will power off automatically after ten minutes, maximising battery life. This pH Pal is ideal for measuring the pH in food processing and water testing applications. The pH tester is an invaluable tool when mixing concentrates with water.

  • pocket-sized pH meter, ideal for everyday use
  • automatic calibration feature
  • easy to read 8 mm LCD display
  • display hold function
  • temperature operating range 0 to 50°C

How to use pH Pal Plus:


  • Remove the blue cap covering the electrode
  • Press the On/Off switch
  • Place the sensor in the solution to be measured
  • Allow a few seconds for the measurement to stabilise
pH Pal Plus contains:


1 x pH Pal Plus


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PH Pal Plus Pen

  • Product Code: Pal Plus PH Pen
  • Availability: In Stock
  • £39.50
  • Ex Tax: £39.50

Tags: pal, plus, ph, pen