Bluelab pH PenPlus Digital pH & Temperature Meter with ProbePlus

Bluelab pH PenPlus & pH ProbePlus | Professional pH & Temperature Meter with Replaceable Probe

Healthy plants start below the surface. The Bluelab pH PenPlus gives growers the confidence to monitor one of the most important factors in successful cultivation—accurate pH. Whether you're growing in hydroponics, coco coir or soil, maintaining the correct pH ensures your plants can absorb the nutrients they need to flourish.

Unlike conventional pH pens, the Bluelab pH PenPlus features an innovative replaceable ProbePlus system. When the probe eventually reaches the end of its life, simply replace the probe—not the entire meter. It's a smarter investment, better for your wallet and kinder to the planet. Your plants will certainly approve.

Why pH Matters

Even the highest-quality nutrients can't perform if your pH is outside the ideal range. Incorrect pH can cause nutrient lockout, leading to deficiencies, slow growth and disappointing harvests.

The Bluelab pH PenPlus provides fast, highly accurate pH and temperature readings, allowing you to make precise adjustments before problems develop. Consistent monitoring helps maximise nutrient uptake, improve plant health and support stronger yields throughout every stage of growth.

Designed for Serious Growers

Built for everyday horticultural use, the Bluelab pH PenPlus combines professional accuracy with simple operation. The durable design stands up to regular testing, while the integrated temperature sensor provides additional insight into your nutrient solution and root zone conditions.

Whether you're mixing nutrients for a single houseplant or managing a commercial hydroponic system, the PenPlus delivers dependable readings you can trust.

Key Features & Benefits

• Measures both pH and temperature
• Replaceable Bluelab ProbePlus extends the life of your meter
• High-accuracy readings for reliable nutrient management
• Ideal for hydroponics, coco coir and soil growing
• Fast, easy operation with minimal setup
• Professional-grade double-junction probe technology
• Tool-free probe replacement
• Built for frequent grow room use

Replace the Probe, Not the Pen

The included Bluelab pH ProbePlus is specifically designed for the pH PenPlus, allowing you to restore factory-level accuracy without replacing the complete meter.

Its advanced double-junction construction improves measurement stability and durability, while the KCl storage cap helps keep the probe hydrated and ready for accurate testing whenever you need it.

Simple to Use

• Rinse the probe with clean water.
• Place it into your nutrient solution or sample.
• Allow the reading to stabilise.
• Adjust your nutrient solution if required.
• Rinse and store the probe using the KCl storage cap after use.

What's in the Box?

• Bluelab pH PenPlus with replaceable pH & Temperature ProbePlus
• Bluelab pH 7.0 Calibration Solution (single-use sachet)
• Bluelab pH 4.0 Calibration Solution (single-use sachet)
• Bluelab KCl Storage Solution
• Multi-language Getting Started Guide

Technical Specifications

• Brand: Bluelab
• Product: pH PenPlus with ProbePlus
• Measurements: pH & Temperature
• Probe: Replaceable double-junction ProbePlus
• Compatibility: Bluelab pH PenPlus
• Maintenance: Regular calibration and KCl storage solution recommended

Top Tip

Looking after your pH probe is just as important as calibrating it. Always store the ProbePlus in its KCl storage solution and calibrate regularly to maintain laboratory-level accuracy and maximise probe lifespan.

Why Choose the Bluelab pH PenPlus?

If you're serious about healthier roots, stronger nutrient uptake and consistently successful harvests, accurate pH monitoring is essential. The Bluelab pH PenPlus combines professional performance, replaceable probe technology and trusted Bluelab reliability in one compact meter that's built to last.

Upgrade your growing toolkit today and give your plants the precise pH control they deserve.