---
product_id: 34756291
title: "AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy"
brand: "apera instruments, llc"
price: "549 Lei"
currency: RON
in_stock: true
reviews_count: 6
category: "BISS"
url: https://www.desertcart.ro/products/34756291-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1
store_origin: RO
region: Romania
---

# 2000 hours battery life ±0.1 pH accuracy Auto Temp. Compensation 0-50°C AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

**Brand:** apera instruments, llc
**Price:** 549 Lei
**Availability:** ✅ In Stock

## Summary

> 🌟 Stay ahead in precision—because your data deserves the best!

## Quick Answers

- **What is this?** AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy by apera instruments, llc
- **How much does it cost?** 549 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/34756291-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1)

## Best For

- apera instruments, llc enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last All Day:** Powered by AAA batteries delivering up to 2000 hours of continuous operation—no interruptions.
- • **Clarity Meets Convenience:** Ultra-clear 180° dual display with stable value auto recognition keeps you confidently informed.
- • **Temperature-Ready Testing:** Auto temperature compensation ensures reliable readings from 0 to 50°C—indoors or out.
- • **Precision at Your Fingertips:** Experience lab-grade ±0.1 pH accuracy for flawless measurements every time.
- • **Smart Calibration, Zero Guesswork:** Auto buffer recognition and calibration solutions included for effortless setup.

## Overview

The PH20 Value pH Tester by Apera Instruments is a waterproof, battery-powered digital pH meter offering ±0.1 accuracy with auto calibration and temperature compensation. It includes a complete kit with calibration solutions, batteries, and a carrying case, designed for professional and outdoor use with up to 2000 hours of continuous operation.

## Description

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

## 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 |
| Age Range (Description) | Adult |
| Batteries | 4 AAA batteries required. (included) |
| Best Sellers Rank | #2,687 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2 in Lab pH Meters |
| Brand | Apera Instruments |
| Color | Regular Kit |
| Date First Available | April 22, 2016 |
| Display Type | Digital |
| Global Trade Identification Number | 00858718006339 |
| Included Components | PH20 Value pH tester kit |
| Indoor/Outdoor Usage | Outdoor |
| Is Discontinued By Manufacturer | No |
| Item Length | 218 Millimeters |
| Item Weight | 3.9 ounces |
| Item model number | PH20 |
| Lower Temperature Rating | 32 Degrees Fahrenheit |
| Manufacturer | Apera Instruments |
| Model Name | PH20 |
| Number of Batteries | 4 AAA batteries required. (included) |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Care Instructions | Hand Wash Only |
| Reusability | Reusable |
| Special Feature | Waterproof |
| Specification Met | CE, ISO 9001, RoHS |
| Style | Regular Kit |
| UPC | 858718006339 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 50 Degrees Celsius |

## Product Details

- **Age Range (Description):** Adult
- **Brand:** Apera Instruments
- **Color:** Regular Kit
- **Display Type:** Digital
- **Included Components:** PH20 Value pH tester kit
- **Outer Material:** Plastic
- **Product Care Instructions:** Hand Wash Only
- **Special Feature:** Waterproof
- **Specification Met:** CE, ISO 9001, RoHS
- **Unit Count:** 1.0 Count

## Images

![AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy - Image 1](https://m.media-amazon.com/images/I/71ewDi82t5L.jpg)

## 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

### ⭐⭐⭐⭐⭐ Works fast and accurately.
*by D***L on August 20, 2025*

Excellent, thank you. It reads quickly and accurately. Great little container it comes in too. Very fast postage from Amazon. Cheers.

### ⭐⭐⭐⭐⭐ Good quality, well thought out product
*by T***E on July 3, 2025*

More accurate than my test drops at least, seems well built and designed. Case and detailed instructions and laminated sheet with quick instructions/care is great. Batteries don't die quick another plus. Compared to the other reliable PH meters fair priced. Do not go cheap and get the yellow ones unless you are going to double check it with test drops( even then I don't trust them to be .5 ph accurate)

### ⭐⭐⭐⭐⭐ Great option for the price, versatile and reliable
*by A***O on August 11, 2025*

Great option for the price! Very compact and easy to use. I've used it to make skincare at home and so far it has been reliable and easy to clean.The only thing to consider is that the cap is not so well sealed. I filled with a storing solution but it leaked a little.

## 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 Romania*
*Store origin: RO*
*Last updated: 2026-03-02*