---
product_id: 77640003
title: "Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit"
brand: "apera instruments"
price: "€ 187.79"
currency: EUR
in_stock: false
reviews_count: 10
url: https://www.desertcart.com.cy/products/77640003-apera-instruments-ai209-ph20-value-waterproof-ph-pocket-tester-0
store_origin: CY
region: Cyprus
---

# ±0.1 pH ultra-precise accuracy Auto temp compensation 32-122°F Waterproof rugged carrying case Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit

**Brand:** apera instruments
**Price:** € 187.79
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Stay ahead with pinpoint pH precision wherever your work takes you!

## Quick Answers

- **What is this?** Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit by apera instruments
- **How much does it cost?** € 187.79 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/77640003-apera-instruments-ai209-ph20-value-waterproof-ph-pocket-tester-0)

## 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

- • **Built to Endure:** Waterproof design and rugged case protect your tester on the go—perfect for fieldwork or lab use.
- • **Long-Lasting Power:** Up to 2000 hours of continuous operation with included AAA batteries keeps you measuring without interruption.
- • **Smart Auto Calibration:** Effortless buffer recognition and auto calibration save you time and eliminate guesswork.
- • **All-Weather Reliability:** Auto temperature compensation ensures consistent results from chilly 32°F to scorching 122°F environments.
- • **Precision that Professionals Trust:** Experience lab-grade ±0.1 pH accuracy for flawless measurements every time.

## Overview

The Apera Instruments AI209 PH20 is a professional-grade waterproof pH pocket tester offering ±0.1 pH accuracy across a full 0-14 pH range. Featuring smart auto calibration with buffer recognition and automatic temperature compensation (32-122°F), it delivers reliable, fast readings in any environment. Packaged in a rugged carrying case with buffers and lanyard, it supports up to 2000 hours of continuous use powered by included AAA batteries—ideal for field and lab professionals demanding precision and durability.

## Description

Easy auto. calibration with buffer recognition auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F) Backed by Apera quality pH sensor with low impedance, ensuring high response rate Comes in a rugged carrying case with pH 47 buffers and a lanyard Auto recognition of stable values improves consistency, so you dont have to guess when to manually hold measurement Up to 2000 hours continuous operation, powered by AAA batteries.

Review: Service from seller in warranty period is satisfactory. - The product is satisfactory/.
Review: Fantastic product - This product is very nice. Using this product for past six month and it's really worthy to the money. I RECOMMENDED THIS 100%

## Features

- Easy auto. calibration with buffer recognition auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F).
- Backed by Apera quality pH sensor with low impedance, ensuring high response rate.
- Comes in a rugged carrying case with pH 47 buffers and a lanyard.
- Auto recognition of stable values improves consistency, so you dont have to guess when to manually hold measurement.
- Up to 2000 hours continuous operation, powered by AAA batteries.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01ENFOHN8 |
| Age Range (Description) | Adult |
| Are batteries included? | Yes |
| Batteries | 4 AAA batteries required. (included) |
| Brand | Apera Instruments |
| Customer Reviews | 4.4 4.4 out of 5 stars (8,453) |
| Date First Available | 5 May 2016 |
| Display Type | Digital |
| Global Trade Identification Number | 00858718006339 |
| Indoor/Outdoor Usage | Outdoor |
| Item Dimensions LxWxH | 17.8 x 4.1 x 3 Centimeters |
| Item Height | 3 Centimeters |
| Item Weight | 110 g |
| Item Width | 4.1 Centimeters |
| Item model number | PH20 |
| Lithium Battery Packaging | Batteries packed with equipment |
| Lithium battery energy content | 30 Watt Hours |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | Apera Instruments, LLC |
| Model Name | PH20 |
| Model number | PH20 |
| Net Quantity | 1.0 Count |
| Number of Batteries | 4 AAA batteries required. (included) |
| Number of lithium ion cells | 1 |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Care Instructions | Hand Wash Only |
| Product Dimensions | 17.8 x 4.1 x 3 cm; 110.56 g |
| Reusability | Rechargeable |
| Special Feature | High Accuracy, Waterproof |
| Specification Met | CE, ISO 9001 |
| UPC | 858718006339 |
| Upper Temperature Rating | 50 Degrees Celsius |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Apera Instruments
- **Outer Material:** Plastic
- **Special Feature:** High Accuracy, Waterproof
- **Specification Met:** CE, ISO 9001

## Images

![Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit - Image 1](https://m.media-amazon.com/images/I/311tIXUP5hL.jpg)
![Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit - Image 2](https://m.media-amazon.com/images/I/412aJGP+dJL.jpg)
![Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit - Image 3](https://m.media-amazon.com/images/I/4172BuVV7uL.jpg)
![Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit - Image 4](https://m.media-amazon.com/images/I/41DOPVmJmEL.jpg)
![Apera Instruments AI209 PH20 Value Waterproof pH Pocket Tester, ±0.1 pH Accuracy, 0-14.0 pH Range, Complete Kit - Image 5](https://m.media-amazon.com/images/I/41gqWz9A4VL.jpg)

## Questions & Answers

**Q: What is the max ph value we can test?**
A: Hi,
You can test 0-14 PH values (+0.1/-0.10 accuracy)
Thanks

## Customer Reviews

### ⭐⭐⭐⭐⭐ Service from seller in warranty period is satisfactory.
*by H***R on 7 November 2019*

The product is satisfactory/.

### ⭐⭐⭐⭐⭐ Fantastic product
*by A***A on 10 December 2018*

This product is very nice. Using this product for past six month and it's really worthy to the money. I RECOMMENDED THIS 100%

### ⭐ Stopped working after couple of usage
*by H***. on 3 September 2020*

We bought this equipment to check conductivity of water. After using it for couple of times, the instrument stopped working. If you are buying it, be aware that this will not serve you for a long time. Note: REMOVE BATTERIES AFTER USAGE. BATTERIES THAT COME WITH THIS INSTRUMENT LEAKED THE SAME DAY, EVEN WHEN THE INSTRUMENT WAS SWITCHED OFF.

## 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 Cyprus*
*Store origin: CY*
*Last updated: 2026-01-31*