---
product_id: 790745012
title: "Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder"
brand: "apera instruments"
price: "€ 0.65"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/790745012-apera-instruments-llc-ai209-t-value-series-ph20-ph-tester
store_origin: NL
region: Netherlands
---

# Fast response with low impedance sensor Up to 150 calibrations with included buffers Probe cleaning brush for max lifespan Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder

**Brand:** apera instruments
**Price:** € 0.65
**Availability:** ✅ In Stock

## Summary

> 🧪 Stay ahead in precision—calibrate like a pro, test like a boss!

## Quick Answers

- **What is this?** Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder by apera instruments
- **How much does it cost?** € 0.65 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/790745012-apera-instruments-llc-ai209-t-value-series-ph20-ph-tester)

## 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

- • **Precision Meets Speed:** Low impedance sensor delivers rapid, stable pH readings with ±0.1 accuracy.
- • **Smart & User-Friendly:** Dual display with temperature compensation, self-diagnosis, and auto power-off for seamless operation.
- • **Organized & Cost-Savvy:** Apera’s CalBox saves you 50% on buffer solutions by maximizing usage efficiency.
- • **Built to Last & Perform:** IP67 waterproof design with probe cleaning brush extends probe life and reliability.
- • **Calibration Made Effortless:** Auto buffer recognition and 3-point calibration ensure flawless accuracy every time.

## Overview

The Apera AI209-T PH20 Combo Kit is a professional-grade pH tester featuring a fast low-impedance sensor, auto 3-point calibration with buffer recognition, and temperature compensation for ±0.1 pH accuracy. Included are 8 oz calibration buffers (pH 4, 7, 10), a probe cleaning brush, and the innovative CalBox organizer that extends buffer life by 50%. Its IP67 waterproof design and smart diagnostics make it ideal for hydroponics, brewing, aquariums, and water treatment, delivering up to 2000 hours of reliable use powered by included AAA batteries.

## Description

"The top-rated pH tester on  now comes with a complete calibration and probe care combo kit, including 3 bottles of 8oz pH calibration solutions (pH 7, 4 & 10), one 4oz 3M KCL storage solution, a probe cleaning brush, and Apera's unique CallBox for organizing all the solutions and efficient use of buffer solutions (help you save the cost on buffers by at least 50%). Performing pH calibration in fresh and clean calibration solutions regularly is critical to the reliable performance of pH meters. As a rule of thumb, we recommend calibrating your pH meter at least once a week. And each batch of calibration solutions should be replaced after 10-15 times of calibration. With Apera's Callbox and 8oz calibration solutions, users can perform up to 150 times of calibration. The probe cleaning brush that comes with the kit can help you easily remove contaminants on the glass bulb sensor without any damage, maximizing the life span of your pH probe.The PH20 Value pH Tester is designed for all kinds of regular water solutions pH test, including hydroponics, pools and spas, water treatment, aquariums, aquaculture, beer brewing, winemaking, cooling towers, etc. Up to 3 points of auto. calibration and 0 to 50˚C Auto temperature compensation (ATC), ±0.1 pH Accuracy with 0 to 14.0 pH measuring range; auto. recognition and auto. indication of stable readings saves you the trouble of guessing when to manually hold measurement. With a clear large screen, it supports dual display of Temp./pH value and indicators of completed calibrations (where L/M/H indicate 3 points of calibrations) and stable readings (with a smiley face). Smart self-diagnosis, warning of out-of-range measurement and incorrect calibrations. IP67 waterproof and dustproof. Up to 2000 hours' continuous operation powered by AAA batteries (with low power warning and Auto power off in 8 min if no operation). 6-Month on the the probe. "

## Features

- The top-rated pH tester now comes with a complete CALIBRATION and PROBE CARE Combo Kit, ensuring reliable test performance
- Comes with a probe cleaning brush for easy removal of contaminants on probes, maximizing probe's life-span
- Comes with Apera's unique CalBox, heping you organize all the solutions and save cost on buffers by at least 50%
- Apera quality pH sensor with low impedance, greatly improving response speed and shorteninb stablizing process
- Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122˚F)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Apera Instruments |
| Part Number | AI209-T |
| Product Dimensions | 17.78 x 4.06 x 3.04 cm; 1.5 kg |
| Batteries | 4 AAA batteries required. (included) |
| Item model number | AI209-T |
| Size | Combo Kit |
| Colour | Combo Kit |
| Style | Combo Kit |
| Material | Polycarbonate Glass HDPE |
| Item Package Quantity | 1 |
| Measurement System | US |
| Included Components | AI209-T PH20 Tester Combo Kit |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Item Weight | 1.5 kg |

## Images

![Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder - Image 1](https://m.media-amazon.com/images/I/612b36RUNML.jpg)
![Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder - Image 2](https://m.media-amazon.com/images/I/61zM0X7STOL.jpg)
![Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder - Image 3](https://m.media-amazon.com/images/I/51giCOPy+PS.jpg)
![Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder - Image 4](https://m.media-amazon.com/images/I/61HfZO6a5kL.jpg)
![Apera Instruments, LLC AI209-T Value Series PH20 pH Tester Combo Kit with 8 oz. calibration buffers (4,7,10), 4 oz. 3M KCL Storage Solution, Probe Cleaning Brush & CalPod Solution Holder - Image 5](https://m.media-amazon.com/images/I/A1grEk4yLGL.jpg)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-23*