Pre-OrderBluelab pH Pen
£89.96£99.95Save £9.99
Pre-order – we’ll dispatch when it arrives
Available from our Bristol shop
This item is too big for our parcel service, so we don't sell it for delivery on the website. Buy it in the shop, or contact us for a delivery quote.
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Description
Take control of your plant’s growing conditions with the Bluelab pH Pen, a reliable and easy-to-use tool for both indoor and outdoor growers. This pen provides precise pH readings, ensuring your nutrient solution is perfectly balanced for optimal nutrient uptake. Suitable for use in soil, hydroponics, and coco coir, the Bluelab pH Pen is highly effective at helping to maintain a healthy growing environment and promoting vigorous plant growth.
- Accurate pH Measurement: Delivers precise pH readings, allowing you to monitor and adjust your nutrient solution to ensure optimal plant growth.
- Easy to Use: Simple one-button operation with a clear digital display, making it easy for growers of all experience levels to check pH levels.
- Compact and Portable: Lightweight and easy to carry, perfect for quick readings in any growing environment, whether indoors or outdoors.
- Automatic Temperature Compensation: Ensures accurate readings by adjusting pH measurements based on the temperature of the solution.
- Durable and Waterproof: Built to withstand the rigours of growing environments, with a waterproof design for reliable performance.
- Low Maintenance: Easy to clean and maintain, with simple calibration steps to ensure continued accuracy.
- Long Battery Life: Equipped with a long-lasting battery, so you can take multiple readings without worrying about frequent recharging.
Maintain the perfect pH for your plants with the Bluelab pH Pen. Whether you’re a beginner or an experienced gardener, this tool helps ensure your plants receive the ideal conditions for healthier growth and improved yields.
Key facts
| Type | pH pen |
|---|---|
| Temperature compensation | Automatic |
| Operation | One button, digital display |
| Build | Waterproof |
| Growing medium | Soil, hydroponics and coco |
| Brand | Bluelab |
| Maker's part number | MEBLPHP |
| Barcode | 9421024920234 |
| Product code | 3602 |
| Category | Nutrient Management |
How to use
Mix your nutrients first, then dip the pen in the solution and read the pH. Adjust with a little pH Down, stir and read again.
- Calibrate it once a week with pH buffer.
- Keep the probe moist with storage solution between uses; never let it dry out.
- Clean it now and then with probe cleaning solution.
Our pH and EC meters guide covers what pH to aim for. To measure feed strength as well, pair it with a Bluelab Truncheon.
Questions
How often should I calibrate the Bluelab pH Pen?
Weekly. All measuring equipment should be calibrated every week to keep nutrient solution readings accurate.
Does it measure EC too?
No, it measures pH only. For EC use a Bluelab Truncheon, or choose a combination pen.
Growers’ guides
- How to Calibrate a pH Pen or Meter, Check EC and Store the ProbeHow to calibrate a pH pen in pH 7 and pH 4 buffer step by step, how often to do it, how to check an EC meter, and how to store and clean the probe.
- Why Are My Plant Leaves Turning Yellow? Causes and FixesWhy plant leaves turn yellow or burn, from tomatoes to houseplants: watering, feed, pH, light, heat, pests or a deficiency, and what to check first.
- Cal-Mag Guide: Calcium and Magnesium Deficiency in PlantsWhat cal-mag is, who needs it, how to tell calcium, magnesium, nitrogen and iron deficiency apart, and how the cal-mag products we sell compare.
