Bluelab pH Pen

The Bluelab pH pen is a robust handheld, hardy, compact pH & temperature pen providing veryday accuracy of your solutions  fundamentals.
This user-friendly & hardy handheld pen will take measurements in increments of 0.1 pH, is fully temperature compensated so you can expect accurate readings every time.

Built for growers.

Bluelab products are designed & built for grower environments - not the lab - so you can relax knowing that your pen can withstand the knocks, drops & deep-water plunges that come with everyday growing. In fact, the fully waterproof Bluelab pH Pen is designed to float when it ends up in your reservoir.

The Bluelab pH Pen is designed & assembled in New Zealand from local & imported components. Tried & trusted by growers all over the world, this essential tool is one of Bluelabs top-selling products.

• Fully waterproof - not just water resistant
• Simple two-point calibration process for accuracy
• One-year peace-of-mind warranty
• Automatic temperature compensation for accurate readings everywhere
• Auto-off function to extend battery life
• 1 AAA battery included - simply power on and go

Why measure pH and temperature?

Get the fundamentals of growing right, every time!
Healthy growing plants, just like humans, need a balanced diet of appropriate nutrients (food). However, plants can only access these nutrients when the nutrient solution is within a certain pH range.

From a water chemistry perspective, pH (potential Hydrogen) plays a pivotal role in making the nutrients in your solution soluble so that they can be accessed by your plants. That’s why if your growing solution becomes too acidic or too alkaline, the plants won’t be able to get access to the nutrients they need to grow. The temperature of your growing solution is equally important as having a solution that’s too hot or too cold can affect growth rate & structure.

To help your plants thrive, get the fundamentals right by measuring pH & temperature to ensure that these are always in the optimal range.