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Bluelab pH Pen

Regular price £89.96 £99.95 | Save £9.99 (9% off)
Tax included. Shipping calculated at checkout.
In Stock
SKU: 3602
Spend £50.00 more for free delivery (shipping surcharges still apply)

Bluelab pH Pen

Bluelab pH Pen


Get precise pH and temperature measurements with just one device€”the Bluelab pH Pen. Renowned for its high-quality testing equipment, Bluelab is a leader in the industry, known for its reliability and accuracy.

This handheld device is not only user-friendly but also offers quick and accurate pH readings on a backlit LCD screen that's easy to read, even in low light. With this pen, you can easily achieve the optimal pH range for most plants, which is between 5.5 and 6.5. This precision allows for maximum nutrient absorption, reducing the risk of nutrient deficiencies significantly.

In addition to pH, the Bluelab pH Pen also measures the temperature of your nutrient solution, helping you prevent root diseases and enhance growth by ensuring your nutrients are at the ideal temperature for uptake.

The pen comes with a 12-month warranty and includes a AAA alkaline battery, ready to use right out of the box, all at an affordable price.

Features of the Bluelab pH Pen:

  • Measures both pH and temperature with options to display temperature in units of your choice.
  • Durable, double-junction probe (note: this probe is not replaceable).
  • Easy-to-read display with backlight.
  • Indicators for successful pH calibration.
  • Function to hold the reading on the screen.
  • Long battery life and a warning when the battery is low.
  • Waterproof and automatic shut-off to conserve battery.
  • Automatic temperature compensation for accurate readings in varying temperatures.



Delivery Information

Most orders are shipped within 24 hours.

Orders are currently shipped with Parcelforce (Express 24 service for standard and heavy/bulky items) or DPD Local (Premium next-day), a signature will be required on delivery. We have been shipping orders for 15 years and our courier choices are subject to change as service levels fluctuate.

All orders are shipped on a next day courier service – you will be informed via email or SMS the evening your order leaves us so you know to expect it the next day. On the morning of delivery you will get another SMS or email informing you of the expected delivery time.

If you have any questions on delivery please get in touch.

As the website calculates some charges by weight it is possible that shipping is not calculated correctly. We reserve the right to get in touch in these circumstances we will request the additional amount or offer to refund the order.

UK Delivery

Standard delivery to the UK Mainland addresses (excluding Scottish Highlands & Islands, offshore and N.I.) is charged at a flat rate of just £5.95 per order or £7.95 (for the premium next-day service), standard delivery (with Parcelforce) is free* for orders over £50.

*Large and/or heavy items attact a surcharge from our courier - shipping surcharges are calculated per item and are applied regardless of order value.

Non-UK mainland destinations are charged by weight.

International Delivery

Coming soon…

Collect in Store (Bristol)

We now offer a 'collect in store' option, which allows you to pay for goods online and collect from our Bristol store at time that suits you (within our opening hours).

The process is simple:

  1. place your order and pay online, select 'Pick Up' at checkout;
  2. receive an email confirming that the order is ready for collection;
  3. bring/show your confirmation email and photo ID to collect your order.


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