---
product_id: 255568585
title: "Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy"
brand: "apera instruments"
price: "40.16 OMR"
currency: OMR
in_stock: true
category: "Apera Instruments"
url: https://www.desertcart.com.om/products/255568585-apera-instruments-ai209-value-series-ph20-waterproof-ph-tester-kit
store_origin: OM
region: Oman
---

# ±0.1 pH ultra-precise accuracy Waterproof for rugged use 2000 hrs continuous battery life Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy

**Brand:** apera instruments
**Price:** 40.16 OMR
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your precision game with the pH tester that works as hard as you do.

## Quick Answers

- **What is this?** Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy by apera instruments
- **How much does it cost?** 40.16 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/255568585-apera-instruments-ai209-value-series-ph20-waterproof-ph-tester-kit)

## 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:** Includes pH 4 & 7 buffers and a rugged carrying case for on-the-go professionals who demand readiness.
- • **Smart Auto Calibration:** Auto buffer recognition and temperature compensation guarantee consistent, reliable readings without the guesswork.
- • **Long-Lasting Performance:** Up to 2000 hours of continuous operation powered by included AAA batteries—stay productive without interruptions.
- • **Built to Brave the Elements:** Fully waterproof design means no fear of spills or outdoor conditions—test anywhere, anytime.
- • **Precision that Powers Decisions:** Experience lab-grade ±0.1 pH accuracy for flawless measurements every time.

## Overview

The Apera Instruments AI209 PH20 is a waterproof, highly accurate pH tester kit featuring ±0.1 pH precision, automatic calibration with buffer recognition, and temperature compensation. Designed for professionals, it offers up to 2000 hours of continuous use powered by AAA batteries and comes complete with calibration buffers and a rugged carrying case for reliable, on-the-go testing.

## Description

Apera Instruments AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy : desertcart.ae: Industrial & Scientific

## 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 4&7 buffers and a lanyard
- Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
- Up to 2000 hours' continuous operation, powered by AAA batteries

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Apera Instruments |
| Brand | Apera Instruments |
| Model | PH20 |
| Product Dimensions | 17.8 x 4.1 x 3 cm; 110.56 g |
| Batteries | 4 AAA batteries required. (included) |
| Item model number | PH20 |
| Manufacturer Part Number | AI209 |
| Special Features | Waterproof |
| Item Weight | 110 g |

## Product Details

- **Age range (description):** Adult
- **Brand:** Apera Instruments
- **Colour:** Regular Kit
- **Included components:** PH20 Value pH tester kit
- **Special features:** Waterproof

## Images

![Apera Instruments 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.

## 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 Oman*
*Store origin: OM*
*Last updated: 2026-01-22*