---
product_id: 253178422
title: "Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk)"
brand: "bluelab"
price: "S$2"
currency: SGD
in_stock: true
url: https://www.desertcart.sg/products/253178422-bluelab-penph-ph-pen-fully-waterproof-pocket-tester-easy-calibration
store_origin: SG
region: Singapore
---

# Fully waterproof design Lab-quality glass probe accuracy Auto off & low battery indicator Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk)

**Brand:** bluelab
**Price:** S$2
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the growth curve with precision pH control!

## Quick Answers

- **What is this?** Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) by bluelab
- **How much does it cost?** S$2 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/253178422-bluelab-penph-ph-pen-fully-waterproof-pocket-tester-easy-calibration)

## 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

- • **Backlit LCD Display:** Clear visibility in any lighting condition, so you never miss a critical reading.
- • **Compact & Waterproof:** Pocket-sized and fully waterproof for on-the-go testing in any environment.
- • **Smart Power Management:** Auto-off and low battery alerts maximize battery life and uptime.
- • **Effortless Two-Point Calibration:** Easy calibration with reminders keeps your readings reliable and hassle-free.
- • **Precision pH & Temperature Readings:** Lab-grade glass probe ensures exact acid/alkaline measurements for flawless nutrient uptake.

## Overview

The Bluelab PENPH pH Pen is a compact, fully waterproof digital meter designed for precise pH and temperature measurement in solutions. Featuring a lab-quality glass probe, easy two-point calibration, backlit LCD, and smart power-saving functions, it’s ideal for hydroponics, brewing, pools, and drinking water. This two-pack kit includes batteries, lanyard, and calibration solution, backed by a 1-year warranty from New Zealand’s leading hydroponic testing brand.

## Description

The ultimate handy solution for measuring pH! Plants get their nutrition from minerals but they can only get all the right minerals they need if certain conditions are right. A key factor that affects food uptake is whether your solution is acid or alkaline. We measure this in pH. The Bluelab pH Pen is the latest innovation for hand held meters. It provides a compact quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. Teamed with our Bluelab EC Pen or Bluelab ppm Pen, you have a handy, convenient and accurate system for ensuring optimum plant growth and health. Now, isn't that handy? Features - Measures pH and temperature - Selectable units for ˚C & ˚F - Backlit LCD display - Double junction probe (not replaceable) - Successful pH calibration indicator - Hold reading function - Low battery indicator - Fully waterproof - Auto off function - Automatic temperature compensation.

## 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
- Complete your monitor and controller system with other testers and meters from Bluelab, more accurate than 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 |
|---------------|-------|
| Brand | Bluelab |
| Manufacturer | rotary |
| Model number | pH Pen |
| Number of Memory Sticks | 1 |
| Item Weight | 122 g |
| Product Dimensions | 20.32 x 5.49 x 2.49 cm; 122.47 g |
| Batteries | 1 AAA batteries required. (included) |
| Item model number | pH Pen |
| Item Height | 0.98 Inches |
| Item Width | 2.16 Inches |
| Power Source | battery powered |
| Are batteries included? | Yes |

## Images

![Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) - Image 1](https://m.media-amazon.com/images/I/71NiAJy-ZqL.jpg)
![Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) - Image 2](https://m.media-amazon.com/images/I/81B2WkpzlSL.jpg)
![Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) - Image 3](https://m.media-amazon.com/images/I/71oOTeNUWpL.jpg)
![Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) - Image 4](https://m.media-amazon.com/images/I/71vvw6UTTTL.jpg)
![Bluelab PENPH pH Pen Fully Waterproof Pocket Tester, Easy Calibration (Twо Расk) - Image 5](https://m.media-amazon.com/images/I/715ityj8IGL.jpg)

## 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 Singapore*
*Store origin: SG*
*Last updated: 2026-02-08*