---
product_id: 255568585
title: "AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy"
brand: "apera instruments"
price: "Bs.2215"
currency: BOB
in_stock: true
reviews_count: 7
category: "Apera Instruments"
url: https://www.desertcart.bo/products/255568585-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1
store_origin: BO
region: Bolivia
---

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

**Brand:** apera instruments
**Price:** Bs.2215
**Availability:** ✅ In Stock

## Summary

> 💧 Stay sharp, stay precise — the pH tester that works as hard as you do!

## Quick Answers

- **What is this?** AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy by apera instruments
- **How much does it cost?** Bs.2215 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.bo](https://www.desertcart.bo/products/255568585-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1)

## 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 plus rugged carrying case for on-the-go professionals
- • **Built for the Elements:** Waterproof casing lets you test confidently in any environment
- • **Power Through Your Day:** Up to 2000 hours of continuous operation powered by easy-to-replace AAA batteries
- • **Precision that Never Quits:** ±0.1 pH accuracy with fast, reliable readings every time
- • **Smart Calibration, Zero Guesswork:** Auto buffer recognition and temperature compensation for flawless results

## Overview

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

## Description

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

Review: Great - Best product, It’s Reliable and Easy to use , Easy to store and carry any place👍
Review: Best - Great brand, precise, u will not need another ph neter in years. One flaw is there tho - at the bottom there is a small cover cap for the sensory glass bubble. That cap is wedged between fork-like spikes. They break easily. So I am using it without that cap cover.

## 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 |
|---------------|-------|
| ASIN | B01ENFOHN8 |
| Batteries | 4 AAA batteries required. (included) |
| Brand | Apera Instruments |
| Customer Reviews | 4.4 4.4 out of 5 stars (8,496) |
| Date First Available | 5 May 2016 |
| Item Weight | 110 g |
| Item model number | PH20 |
| Manufacturer | Apera Instruments |
| Manufacturer Part Number | AI209 |
| Model | PH20 |
| Product Dimensions | 17.8 x 4.1 x 3 cm; 110.56 g |
| Special Features | Waterproof |

## Product Details

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

## 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

### ⭐⭐⭐⭐⭐ Great
*by P***H on 29 December 2020*

Best product, It’s Reliable and Easy to use , Easy to store and carry any place👍

### ⭐⭐⭐⭐ Best
*by A***R on 14 January 2025*

Great brand, precise, u will not need another ph neter in years. One flaw is there tho - at the bottom there is a small cover cap for the sensory glass bubble. That cap is wedged between fork-like spikes. They break easily. So I am using it without that cap cover.

### ⭐⭐⭐⭐⭐ Review
*by M***N on 8 April 2025*

Goed te kalibreren en nauwkeurig in het meten van ph van bijv druiven en appels en peren.

## 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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**Shop now:** [https://www.desertcart.bo/products/255568585-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1](https://www.desertcart.bo/products/255568585-ai209-value-series-ph20-waterproof-ph-tester-kit-0-1)

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*Product available on Desertcart Bolivia*
*Store origin: BO*
*Last updated: 2026-03-08*