

Bluelab pH Pen
💳 10% Digital Discount 🚚 Free Next Working Day Delivery on Orders Over £50*£99.99 Original price was: £99.99.£89.99Current price is: £89.99.
Bluelab pH Pen
In stock
In stock
BlueLab pH Pen
Bluelab have set the standards for digital pH and EC testing over the years and this great little pH Pen will allow you to measure the pH of your water or nutrient solution quickly and accurately with added bonus of also measuring the water temperature.
Once measured, you can then buffer your solution to the ideal pH for your plants. When the nutrient solution is the right pH, it will allow your plants to take up the maximum amount of nutrient and, therefore thrive!
pH meters are an essential part of any grow room set up which help maximise nutrient uptake. When the pH is consistently incorrect it can lead to plant dificiences and even slower growth rates. To mantain meter accuracy calibrate this meter every 3 weeks with Buffer 4 and 7. This will ensure that the readings that you are getting are correct which will make for much happier plants.
How to use
Simply immerse the meter’s sensor into the nutrient solution and take the reading directly. Allow for the LED display to stop flashing so the reading will be accurate.


Technical Specification
- Automatic Temperature Compensation: Yes
- Operating Environment: 0 – 50 ̊C / 32 – 122 ̊F
- Measurement Resolution: 0.1 pH, 1 ̊C / 1 ̊F
- Measurement Range: 0.0 – 14.0 pH, 0 – 50 ̊C / 32 – 122 ̊F
- Measurement Accuracy: ± 0.1 pH, ± 1 ̊C / ±2 ̊F
- Calibration: pH requires two point, pH 7.0 & pH 4.0 or pH 10.0 Power: 1 x AAA alkaline battery
- CE Compliance: Yes
- FCC Compliance: Yes
- RoHS Compliance: Yes
- Other specifications: Warranty: 1-YEAR
- Country of Origin: New Zealand
Informational Videos

Instruction Manual
BL_ENG_Manual_pH-Pen
- Measures pH and temperature
- Backlit LCD display
- Hold reading function
- Fully waterproof
- Automatic temperature compensation
Weight | 0.2 kg |
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FREE NEXT DAY DELIVERY – Delivery Information
We offer FREE NEXT-DAY DELIVERY on orders over £50*
*An additional heavy goods surcharge may be applied to heavy or bulky goods (more info).
**Regional delivery surcharges apply for Scotland, Northern Ireland and the rest of the UK.
Orders Under £50
– Orders under £50 and under 5KG will be charged £7.99 (inc vat).
– Orders under £50 and 5KG+ will be charged at £8.99 (inc vat).
Our Next Working Day Delivery Policy
We will always do our utmost to deliver goods to you the next working day for all orders placed before 3pm (Mon-Thurs).





