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Doctor Blooms£94.99Visit shop Bluelab pH Pen/Temperature
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B&Q£107.95Visit shop B&Q - Ph Pen Ph Measurement For Plant Nutrients Aquarium Hydroponics
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The Bluelab pH Pen is an essential tool for hydroponic growers, aquarium enthusiasts, and gardeners who need to monitor nutrient uptake by measuring both pH levels and solution temperature. It provides the high-level precision required to ensure plants absorb minerals effectively, though users must remain diligent about regular probe calibration to maintain ongoing measurement accuracy.
| Brand | Bluelab |
|---|
It is recommended to calibrate at least once every 30 days, or whenever the calibration indicator prompts you to do so.
No, this device is designed for spot-testing only and should not be left continuously submerged in a reservoir.
Check your specific package contents, but typically you will need to purchase pH 4.0 and 7.0 buffer solutions separately if not included.
With proper care, cleaning, and storage, the probe can last for several years, though it will eventually need replacement due to the degradation of the glass electrode.
Yes, the unit is fully waterproof, meaning accidental submersion will not damage the internal electronics.
pH levels are naturally sensitive to temperature; automatic temperature compensation ensures your pH reading is adjusted to account for these shifts.
Ensure the probe is fully submerged and wait for the reading to stabilize. If it still fluctuates, the probe may need cleaning or recalibration.
Ensure you are using fresh, high-quality pH buffer solutions and that the probe is at room temperature.
Check the battery installation or replace the batteries with fresh units.
Before the first use, the probe must be calibrated using standard pH buffer solutions to ensure accuracy. To maintain the device, never let the probe dry out; always store it in the cap with a small amount of storage solution or clean water. If the probe becomes dirty, gently clean it with a soft cloth and a specialized probe cleaner, avoiding abrasive materials that could scratch the glass sensor. The pen is compatible with most liquid nutrient solutions used in hydroponics and general horticulture. Ensure the device is powered down when not in use to extend battery life and check the battery compartment periodically for any signs of corrosion.
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