---
product_id: 314720729
title: "pH Pen"
brand: "bluelab"
price: "€ 230.58"
currency: EUR
in_stock: true
category: "Bluelab"
url: https://www.desertcart.nl/products/314720729-ph-pen
store_origin: NL
region: Netherlands
---

# Lab-quality glass probe for precise pH readings Auto off & low battery indicator for reliable uptime Auto temperature compensation for accurate results pH Pen

**Brand:** bluelab
**Price:** € 230.58
**Availability:** ✅ In Stock

## Summary

> 🌿 Master your grow game with precision and confidence!

## Quick Answers

- **What is this?** pH Pen by bluelab
- **How much does it cost?** € 230.58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/314720729-ph-pen)

## Best For

- bluelab enthusiasts

## Why This Product

- Trusted bluelab brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **User-Friendly Design:** Backlit LCD display and waterproof pocket-sized build make it perfect for on-the-go professionals.
- • **Effortless Calibration:** Easy two-point calibration with reminders keeps your measurements consistently reliable without the hassle.
- • **Trusted Industry Leader:** Made in New Zealand by Bluelab, backed by a 1-year warranty and thousands of 5-star reviews.
- • **Precision at Your Fingertips:** Lab-grade double junction glass probe ensures unmatched accuracy and durability for all your pH testing needs.
- • **Smart Temperature Compensation:** Automatically adjusts readings based on temperature, delivering precise data every time.

## Overview

The Bluelab BLU8000 PENGTB Grower's Toolbox with pH is a professional-grade, waterproof digital pH meter featuring a durable double junction glass probe, easy two-point calibration, and automatic temperature compensation. Designed for hydroponics, brewing, and water testing, it offers lab-quality accuracy in a compact, user-friendly package, backed by a 1-year warranty and trusted by thousands worldwide.

## Description

Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration, Double Junction Probe for Improved Accuracy and Durability

## Features

- Measures pH in solution for acid or alkaline conditions to make precise up and down adjustments with lab quality glass probe used for the pool, drinking water, hydroponics, brewing, and growing
- EASY two point calibration and auto temperature compensation makes this digital meter a handy tool with backlit LCD display and calibration reminders
- Double junction probe improves accuracy, reliability, and probe lifespan compared to regular probes, more accurate than comparable pens, test strips and other testing methods
- Other features: auto off function, low battery indicator, units for temperature; KIT INCLUDES: AAA battery, lanyard, and calibration solution
- Made in New Zealand and manufactured by Bluelab, the industry leader in hydroponic testing equipment; 1 Year Limited Warranty with proof of purchase

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005POOJHG |
| Brand Name | Bluelab |
| Customer Reviews | 4.4 4.4 out of 5 stars (4,597) |
| Global Trade Identification Number | 09421024920234 |
| Included Components | PH Pen |
| Item Dimensions | 20.3 x 5.5 x 2.5 centimeters |
| Item Type Name | pH Meter |
| Item Weight | 122 g |
| Manufacturer | Bluelab |
| Material Type | Glass |
| Model | pH Pen |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | PENPH |
| UPC | 706842510010 715706332132 |
| Unit Count | 1 Count |
| Warranty Description | One year free repair or replacement guarantee |

## Product Details

- **Brand:** Bluelab
- **Item dimensions L x W x H:** 20.3 x 5.5 x 2.5 centimeters
- **Item weight:** 122 g
- **Material:** Glass
- **Number of Items:** 1

## Images

![pH Pen - Image 1](https://m.media-amazon.com/images/I/71o1mmMOglL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Why should I choose the Bluelab pH pen over others?**
A: 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).

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

**Q: How does Bluelab make calibration super easy?**
A: 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.

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

**Q: Can I use the pH Pen to measure the pH of tap water, distilled water, or reverse-osmosis water?**
A: No. For distilled & RO water there aren't enough dissolved ions (salts) for a stable pH reading. For tap water, w/o sufficient dissolved minerals, the answer is also no. Adding a few drops of KCL storage solution may work to enable a stable reading.

## Frequently Bought Together

- bluelab pH Pen - ± 0.1 pH Accurate, Durable Double Junction Probe, Waterproof & Floats, Auto Temperature Compensation, Easy Calibration - Made in NZ
- Bluelab pH 4.0 & 7.0 Calibration Solution Kit - pH Meter & pH Pen Calibration for Balanced Nutrient Solution NIST Traceable | Hydroponics, Gardening & Growing Tents (500 ml/ 16.9 Fl Oz Each)
- Bluelab STSOL120 KCL Storage Solution 120ml pH Probe and Pen, Maintain Meters Used for Water, Soil, and Hydroponic System or Indoor Plant Grow White

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-09-27*