Why should I choose the Bluelab pH pen over others?

The probe quality. Highly accurate, compensates for temp & is fast to a stable reading. It's a double junction probe, so it's durable. And it's full of thoughtful touches (the ring on top, the storage cap, the calibration indicator to name a few).

Other pens come with a hard carry case & calibration solutions in plastic bottles. Yours does not. Why is that?

Great question. We have made the deliberate choice to make our packaging as sustainable as possible. To that end, our packaging is all fully recyclable, with no hard plastics or styrofoam inserts.

How does Bluelab make calibration super easy?

Calibrating is an easy & fast process! Each pen includes calibration solutions & clear instructions. A check mark appears when the pen is calibrated. When the pen loses calibration, the check mark disappears, informing you it's time to recalibrate.

I sometimes see a white crust built up on the end of the pen. What is this?

This is very common in pH meters & is nothing to worry about. The storage solution used to hydrate your pen (and extend its longevity) is potassium salt, which sometimes dries as a white crust on your probe. Simply rinse this away under water.

There's a lot here about growing plants. Can I use the Bluelab pH pen for other applications?

Absolutely! Our pen is a critical tool for anyone who is seeking precision and consistency in the pH of their liquid solution. Our pen is used by leading brewers, vintners, wastewater technicians, and scientists in the field, just to name a few.

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Bluelab pH Pen Meter and Probe Care Kit pH with Calibration Supplies, Storage Solution & Brush, Reliable Digital Tester for pH, Temperature in Growing Solutions, Optimal Plant Health and Yield

Bluelab pH Pen Meter and Probe Care Kit pH with Calibration Supplies, Storage Solution & Brush, Reliable Digital Tester for pH, Temperature in Growing Solutions, Optimal Plant Health and Yield

Product ID: 545532290

💧Waterproof & floats

🧪Lab-quality double junction glass probe

🌡️Automatic temperature compensation

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2435 kr

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Sold byAmazon GreenlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Stay ahead in the growth game with precision pH control!

MAXIMIZE YOUR YIELD - Optimize growing conditions with precise pH management, boosting plant health and productivity.
BUILT TO LAST FLOAT - Fully waterproof design that even floats, perfect for rugged, repeated use in any environment.
SMART USER FRIENDLY - Backlit LCD and auto temperature adjustment ensure clear, reliable readings anytime, anywhere.
PRECISION IN EVERY DROP - Accurate pH and temperature readings with lab-grade glass probe for optimal nutrient balance.
COMPLETE CARE KIT INCLUDED - Everything you need for maintenance—calibration sachets, cleaning brush, and probe care solutions.

The Bluelab pH Pen Meter and Probe Care Kit is a professional-grade, waterproof digital tester designed for accurate pH and temperature measurement in hydroponic and growing solutions. Featuring a durable double junction glass probe with automatic temperature compensation, it ensures reliable readings and long probe life. The kit includes calibration solutions, cleaning tools, and storage accessories to maintain probe integrity, helping growers optimize plant health and maximize yields.

Specifications

Best Sellers Rank	#7,536 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Lab pH Meters
Customer Reviews	4.4 out of 5 stars 216 Reviews

Reviews

R**N

11.01.2025

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14.11.2025

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17.12.2025

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30.01.2026

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5.06.2025

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18.07.2025

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19.01.2026

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19.07.2024

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18.03.2026

A**R

29.01.2026

R**N

19.06.2024

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