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Bluelab pH PenPlus - Green Thumb Depot
Bluelab pH PenPlus (On SALE until June 30)

Bluelab pH PenPlus (On SALE until June 30)

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SKU: PENPLUSPH

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$121.00
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The Bluelab pH PenPlus is a compact, handheld digital meter designed to accurately measure pH and temperature in nutrient solutions. Built for both home and commercial growers, it delivers reliable readings essential for maintaining optimal plant health in hydroponic, soil, and irrigation systems.

A key feature of the PenPlus is its replaceable pH/temperature probe, allowing users to restore performance without replacing the entire unit. This extends the product’s lifespan and reduces long-term costs, making it a practical and sustainable solution for continuous monitoring.

Engineered for durability, the device is IP68-rated waterproof and dustproof, ensuring it can withstand demanding grow environments. It also includes a double-junction probe for improved accuracy and stability, along with a backlit display for easy reading in all conditions.

The PenPlus offers simple 2-point calibration with reminders, a hold function for stable readings, and an auto-off feature to conserve battery life. Its ergonomic design and integrated storage cap help maintain probe hydration and ensure consistent performance over time.

Designed with growers in mind, the Bluelab pH PenPlus helps monitor nutrient solution balance, enabling better control over pH levels—critical for proper nutrient uptake and healthy plant growth.

Key Highlights

  • Measures pH (0.0–14.0) and temperature
  • Replaceable probe for extended product life
  • High accuracy (±0.1 pH)
  • Waterproof (IP68) and durable design
  • Easy calibration with reminder system
  • Bright backlit display and portable form
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Optimize Your Growing Accuracy: Bluelab pH PenPlus

  • Reliable Readings: Delivers precise pH and temperature measurements, helping maintain the perfect balance for efficient nutrient uptake and vigorous plant development.
  • Robust & Waterproof Design: Engineered for tough growing conditions with a fully waterproof build that can float if accidentally dropped in water.
  • Temperature Adjustment Feature: Automatically compensates for temperature changes to ensure consistent and dependable results.
  • Convenient & Energy Efficient: Comes ready with battery included and an auto power-off function to help conserve battery life.

Product Overview

Specifications

What's Included?

Warranty Policy

Product Overview

The Bluelab pH PenPlus is a must-have device for growers, delivering precise pH and temperature readings. This durable and portable meter supports accurate nutrient control, helping create ideal conditions for healthy and consistent plant growth.

Bluelab pH PenPlus – Reliable Measurement

The Bluelab pH PenPlus provides all you need for precise and effective monitoring of your nutrient solution, supporting ideal conditions for plant growth.

Precision

Waterproof

Strength

Compact

Why Choose Bluelab

Choose Bluelab for reliable and precise monitoring solutions in plant care. Recognized for producing top-tier devices, Bluelab ensures optimal plant health through accurate and real-time data on water pH, conductivity, and temperature. Ideal for both amateur and professional growers, Bluelab's products simplify the complexities of plant care, promoting vigorous growth and superior yields.

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Why Choose Us

At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.

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Customer Reviews


Trusted by authentic customer reviews from verified buyers worldwide.
If I could rate 6 stars I would!
If I could rate 6 stars I would! My representative Edouard B. has been shockingly responsive! Like - oh my god - an actual SERVICE oriented company. He's dug into my odd connectivity issues I've been having - and following up in an AMAZINGLY timey manner. No shit. You'll be impressed! (And the price was also unbeatable, quick shipping...it's all PERFECT). Thank you Ed!!
Jim D
Customer service was outstanding great…
Customer service was outstanding great people to deal with they understand your needs and they will do their best to fulfill them there is no way I can complain about them because they are the best help out there.Thanks green thumb depot. I’ll definitely order from them again
Glenn Appleton
The machine is doing just what my…
The machine is doing just what my salesman told it would do (I appreciate you Ed thank you) . The machine is what we need for our new business we’re starting up, soon to be llc and licensed. We are getting a lot of clients wanting our services. Ed I will be needing more of your products, thank you again.
Freddie
Fantastic
Great prices, fantastic customer service, and mind blowing shipping! Incredible. Will be using again and telling anyone in need.
Kar
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FAQ Section

What does the Bluelab pH PenPlus measure?
It measures both pH levels and temperature in nutrient solutions, helping maintain optimal growing conditions.
What is the pH measurement range?
The device measures pH from 0.0 to 14.0 with high accuracy.
Is the probe replaceable?
Yes, the PenPlus features a replaceable pH and temperature probe, extending the life of the device.
Is the Bluelab pH PenPlus waterproof?
Yes, it has an IP68 waterproof and dustproof rating, making it suitable for tough grow environments.
Does it adjust for temperature automatically?
Yes, it includes automatic temperature compensation to ensure accurate readings.
What type of probe does it use?
It uses a double-junction probe, which improves durability and measurement stability.
What power source does it use?
The pen operates on one AAA battery, making it portable and easy to use.

Specifications

Bluelab pH PenPlus
Brand Bluelab
Power 1 x AAA alkaline battery
Measurement Resolution 0.1 pH, 1 ̊C / 1 ̊F
Measurement Accuracy ± 0.1 pH, ± 1 ̊C / ±2 ̊F
Operating Environment 0.2 EC and above
0 – 50 °C (32 – 122 °F)
(Do not use or store outside this temperature range)
Measurement Range ±0.0 – 14.0 pH, 0 – 50 ̊C / 32 – 122 ̊F
Calibration Two point pH 7.0 and pH 4.0 or pH 10.0
CE Certification Compliance Yes
IP Rating IP68 - Dust and Water resistance
Automatic Temperature Compensation Yes
RoHS Compliance Yes
FCC Compliance Yes
Spec Sheet PDF
Instructions Manual PDF

Items in the box

Bluelab pH PenPlus with replaceable pH and Temperature probe

Bluelab pH 7.0 Calibration Solution, single-use

Bluelab pH 4.0 Calibration Solution, single-use

Bluelab KCl Storage Solution

Multi-language Getting Started Guide (EN, ES, DE, FR)

Warranty Policy

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