---
product_id: 48808217
title: "PH20 Value pH Meter, Pocket Tester, Waterproof, ±0.1 pH Accuracy, 0-14 pH Range, ±0.5°C Temperature Sensor, Complete kit"
brand: "apera instruments"
price: "€ 124.87"
currency: EUR
in_stock: true
reviews_count: 13
category: "Apera Instruments"
url: https://www.desertcart.nl/products/48808217-ph20-value-ph-meter-pocket-tester-waterproof-0-1-ph
store_origin: NL
region: Netherlands
---

# Waterproof design ±0.1 pH accuracy 2000 hrs battery life PH20 Value pH Meter, Pocket Tester, Waterproof, ±0.1 pH Accuracy, 0-14 pH Range, ±0.5°C Temperature Sensor, Complete kit

**Brand:** apera instruments
**Price:** € 124.87
**Availability:** ✅ In Stock

## Summary

> 💧 Stay sharp, stay precise — pH testing made effortless.

## Quick Answers

- **What is this?** PH20 Value pH Meter, Pocket Tester, Waterproof, ±0.1 pH Accuracy, 0-14 pH Range, ±0.5°C Temperature Sensor, Complete kit by apera instruments
- **How much does it cost?** € 124.87 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/48808217-ph20-value-ph-meter-pocket-tester-waterproof-0-1-ph)

## Best For

- apera instruments enthusiasts

## Why This Product

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

## Key Features

- • **Ready When You Are:** Complete kit with calibration solutions, batteries, and carrying case—no extra purchases needed.
- • **All-Weather Accuracy:** Auto Temperature Compensation (0-50°C) ensures reliable results in any environment.
- • **Pocket-Sized Powerhouse:** Compact, waterproof design with 2000 hours of continuous operation keeps you testing on the go.
- • **Smart Stability Recognition:** Auto detection of stable values means no more guesswork during measurements.
- • **Precision that Professionals Trust:** Ultra-accurate ±0.1 pH readings for flawless water and solution testing.

## Overview

The Apera Instruments PH20 is a professional-grade, pocket-sized pH meter offering ±0.1 accuracy across the full 0-14 pH range. Featuring waterproof construction, auto temperature compensation, and smart stable value recognition, it delivers reliable, consistent readings for hydroponics, pools, labs, and more. The all-inclusive kit comes with calibration solutions, batteries, and a durable carrying case, providing 2000 hours of continuous use powered by AAA batteries.

## Description

Reliable pocket pH tester with 0.1 pH accuracy, 0-14 pH range, temperature sensor, and auto calibration. Ideal for hydroponics, pools, water treatment, and more.

Review: Excellent Upgrade from Cheap Meters - I I purchased the Apera PH20 for testing my aquarium water parameters, and it has been flawless. The key features that won me over are: • German Sensor & Accuracy: Precise, consistent readings crucial for sensitive aquarium livestock • Easy 3-Point Calibration: Simple process with all solutions included (pH 4, 7, 10) • All-in-One Kit: Robust case protects everything neatly • Transparency Code: Provided instant authenticity verification • Excellent Durability: Survived multiple drops and shows no wear after months of use • Reliable Functionality: Quick readings, automatic temperature compensation, and stable results It's a professional-grade instrument made accessible for the home user. Highly recommended.
Review: Great pH meter - I've had this since 2020 and it has been fabulous with my cosmetic products. Accurate readings, easy to calibrate, always ready when i need it. One thing to keep in mind is the difficulty of cleaning the probe, especially when you test more viscous products. I thoroughly clean mine, at least I thought i did, until recently it has grown mould around some of the casing. Off to get a new one. Apart from that, great value for money, fantastic piece of kit for your lab.

## Features

- Easy Auto calibration with Buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50.0C)
- Complete Kit with ready-to-use calibration solutions, batteries, and a lanyard in a portable carrying case
- Auto recognition of stable values improves consistency so you don't have to guess when to manually hold measurement
- An ultra-clear 180 viewing angle screen with dual display of Temp./pH and indications of completed calibrations and stable readings
- 2000 hours' continuous operation, powered by AAA batteries

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01ENFOHN8 |
| Batteries | 4 AAA batteries required. (included) |
| Batteries Required? | Yes |
| Batteries included? | Yes |
| Battery Cell Type | Alkaline |
| Best Sellers Rank | 70,208 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 2 in pH Meters |
| Colour | Regular Kit |
| Customer Reviews | 4.2 4.2 out of 5 stars (8,476) |
| Date First Available | 22 April 2016 |
| Display style | Digital |
| Included components | 1 Pocket tester, 1 set of calibration solutions, 2 batteries, 1 case |
| Item Package Quantity | 1 |
| Item Weight | 110 g |
| Item model number | PH20 |
| Manufacturer | Apera |
| Material | Plastic |
| Measurement Accuracy | +/- 1 digit |
| Measurement System | US |
| Part number | AI209 |
| Pattern | Tester Kit |
| Power source type | Battery Powered |
| Product Dimensions | 17.8 x 4.1 x 3 cm; 110.56 g |
| Size | Regular Kit |
| Special Features | Waterproof |
| Specification met | CE, ISO 9001 |
| Style | single |

## Product Details

- **Age range (description):** Adult
- **Brand:** Apera Instruments
- **Colour:** Regular Kit
- **Connectivity technology:** Bluetooth
- **Display type:** Digital
- **Included components:** 1 Pocket tester, 1 set of calibration solutions, 2 batteries, 1 case
- **Outer material:** Plastic or Silicone
- **Product care instructions:** Wipe Clean
- **Special feature:** Waterproof
- **Specification met:** CE, ISO 9001

## Images

![PH20 Value pH Meter, Pocket Tester, Waterproof, ±0.1 pH Accuracy, 0-14 pH Range, ±0.5°C Temperature Sensor, Complete kit - Image 1](https://m.media-amazon.com/images/I/71ewDi82t5L.jpg)

## Available Options

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

## Questions & Answers

**Q: How often does this pH meter need to be re-calibrated and/or how can I tell when it needs to be re-calibrated?**
A: The manufacturer recommends keeping the device probe in a neutral storage solution; the protective tip case/container actually has a 'fill' line for guidance, and it is designed to hold a liquid safely when stored as indicated -- If someone uses distilled or deionized water by itself as a storage solution, the salts contained in the probe tip will dissipate and the probe will then need to be replaced--about $25, plus a fine headache trying to get it right. If you are out of storage solution keeping the probe wet somehow is better than dry--but don't store without the specialized solution for more than a day or so; these are typically $10-$13 for 100ml - 250ml size bottles on Amazon.

**Q: Can anyone confirm if this comes pre calibrated?**
A: Mine was, the PH20 unit. Dead on, but I still did the cal to know how. If you use it for pH 8.0 or lower, the 4.00 and 7.00 solutions are perfect-no need for 10.00 test buffer solution. I am AMAZED at how bad my cheapy meters are, and how they disagree with each other and this one.

**Q: Can this be used to analyze urine?**
A: Yes, it can tests urine with no problem. You can use the probe cap as a container for the urine.

**Q: I will be using this meter once a month. Do I need storage solution for the probe?**
A: Storing the probe in the storage solution helps keep the probe's sensitivity and accuracy. So it's a recommended practice. While storing the probe without any solution will not damage the probe, it's just going to cause the probe to lose its sensitivity and accuracy temporarily. Store the probe in the storage solution again for about 10 minutes, the sensitivity and accuracy can be restored.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Upgrade from Cheap Meters
*by M***N on 13 November 2025*

I I purchased the Apera PH20 for testing my aquarium water parameters, and it has been flawless. The key features that won me over are: • German Sensor & Accuracy: Precise, consistent readings crucial for sensitive aquarium livestock • Easy 3-Point Calibration: Simple process with all solutions included (pH 4, 7, 10) • All-in-One Kit: Robust case protects everything neatly • Transparency Code: Provided instant authenticity verification • Excellent Durability: Survived multiple drops and shows no wear after months of use • Reliable Functionality: Quick readings, automatic temperature compensation, and stable results It's a professional-grade instrument made accessible for the home user. Highly recommended.

### ⭐⭐⭐⭐⭐ Great pH meter
*by T***G on 15 August 2022*

I've had this since 2020 and it has been fabulous with my cosmetic products. Accurate readings, easy to calibrate, always ready when i need it. One thing to keep in mind is the difficulty of cleaning the probe, especially when you test more viscous products. I thoroughly clean mine, at least I thought i did, until recently it has grown mould around some of the casing. Off to get a new one. Apart from that, great value for money, fantastic piece of kit for your lab.

### ⭐⭐⭐⭐ Great PH pen, can’t go wrong
*by C***S on 23 November 2019*

Much much better than the cheap PH pens that you can get in different colours. Reading is quick and indicated by a smiley face. Comes with two buffer solutions (pre-made) and calibration in straight forward. I gently heated the buffer solution to near 25 degrees to get an accurate calibration but I don’t think it was necessary. Instructions could be better but no issue in understanding them. To take a reading, switch on and dip the pen into the solution, gentle stir and wait for smiley face (appears in about 3-5s) and read the number from the screen, that’s the PH. Clean probe with distilled or deionised water afterwards. I find for reading lower PH values, in my case 6.1, the readings too a little longer to settle, maybe 5-7s. Still not an issue but for that I knocked off 1 star for accuracy. I store the pen with a few drops of tap water to keep the probe from drying out. You can get KCI solution instead and use that to store the pen but it’s mega expensive. Same with the buffer solution. It’s also a shame they don’t supply you with the PH 10 buffer solution. But for my purposes I don’t need an accurate reading much above 7, though it would of been handy. To calibrate press and hold the Cal button and dip into PH 7 solution, gentle stir and let the reading stabilise. Press Cal button again. Clean with distilled water and repeat for PH 4 solution. You are now calibrated. I use deionised water from Halfords £3.50 for 5l, Cheaper and easier to get hold of than distilled water. Personally i dip the pen straight into buffer solution in the bottle making sure probe is cleaned with deionised water and dabbed dry with tissue first. The amount I use the pen and the amount I need to recalibrate means it be silly for me to pour the buffer solution into another bottle and throw away afterwards. A pair of PH buffer solution is extremely overpriced, you may as well get a new pen. For that I knocked of one star. Overall I think you can’t get wrong with this pen and with items like this you really do get what you pay for. Ignore the cheap pens if you want a reliable PH reading. I’ve used the cheap pens and always had doubt whether the reading was correct.

## Frequently Bought Together

- APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution
- Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-10*