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GroLine pH/Temperature Tester

Regular price £73.76 £81.95 | Save £8.19 (9% off)
Tax included. Shipping calculated at checkout.
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SKU: 4348
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GroLine pH/Temperature Tester

GroLine pH/Temperature Tester


The GroLine pH/Temperature Tester is a compact meter designed for measuring the pH of hydroponic nutrient solutions. Its ergonomic design ensures comfortable handling, while the large, easy-to-read LCD provides readings for both pH and temperature, as well as indicators for calibration, stability, and low battery. Operating this device is straightforward, with just two buttons: one for power and the other for automatic one or two-point calibration.

This GroLine pocket pH Tester offers an economical solution for monitoring the pH of hydroponic nutrient solutions, crucial for promoting optimal growth. Maintaining the right pH level is vital as it affects mineral and nutrient solubility, impacting plant uptake and growth. Additionally, pH can influence nitrogen-fixing bacteria crucial for plant health. Different plants thrive within specific pH ranges, detailed in the provided table.

The GroLine pH/Temperature Tester is versatile, and capable of measuring pH in both soils and nutrient solutions. For soil pH measurement, a slurry of 1 part soil to 1 part water is recommended, allowing time for settling before taking readings.

Despite its advanced features, the GroLine pH/Temperature Tester remains user-friendly. The front panel features two buttons for power and calibration, with additional customisation options accessible via a third button in the battery compartment. Customisation includes temperature display in Celsius or Fahrenheit, selectable automatic shut-off times, and the choice between Hanna's Quick Cal pH/EC standard or traditional buffer values.

The electrode is equipped with a unique extractable cloth junction, essential for maintaining accurate readings by preventing clogging. This feature allows for periodic extraction of a small portion of the junction, renewing its effectiveness. The overall length of the junction is about 1", ensuring longevity and reliability.

Key Features:

  • Built-in temperature sensor for Automatic Temperature Compensated measurements
  • Renewable junction to clear clogging and ensure accurate readings
  • Stability indicator for determining reading stability
  • Automatic calibration to one or two points with a push of a button
  • Uses Hanna's Quick Cal pH/EC standard with a pH value of 6.86
  • Battery percentage level displayed at start-up
  • Low battery indicator displayed when less than 10% battery life remains



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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