---
product_id: 56650618
title: "AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration"
brand: "apera instruments"
price: "€ 204.59"
currency: EUR
in_stock: true
reviews_count: 11
category: "Apera Instruments"
url: https://www.desertcart.sk/products/56650618-ai209-t-value-series-ph20-ph-tester-combo-kit-including
store_origin: SK
region: Slovakia
---

# Fast response with low impedance sensor IP67 waterproof & dustproof durability Save 50% on calibration buffers with CalBox AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration

**Brand:** apera instruments
**Price:** € 204.59
**Availability:** ✅ In Stock

## Summary

> 🔬 Elevate your pH game with precision, savings, and durability — because your measurements deserve the best!

## Quick Answers

- **What is this?** AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration by apera instruments
- **How much does it cost?** € 204.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/56650618-ai209-t-value-series-ph20-ph-tester-combo-kit-including)

## 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

- • **Effortless Accuracy:** Auto calibration with buffer recognition and temperature compensation ensures flawless results every time 🌡️
- • **Precision Meets Speed:** Low impedance sensor delivers rapid, stable pH readings in seconds ⚡
- • **Probe Longevity Boost:** Included cleaning brush removes contaminants gently, extending probe life 💪
- • **Cost-Savvy Calibration:** Innovative CalBox organizes solutions and cuts buffer costs by half 🧴
- • **Built for Real-World Use:** IP67 waterproof design and 2000 hours battery life keep you testing anywhere, anytime 💧

## Overview

The APERA INSTRUMENTS AI209-T PH20 pH Tester Combo Kit is a top-rated, professional-grade pH meter featuring a fast low-impedance sensor, auto calibration with buffer recognition, and temperature compensation for ±0.1 pH accuracy. It includes a complete calibration and maintenance kit with 3 calibration solutions, a probe cleaning brush, and the innovative CalBox to organize and reduce buffer costs by 50%. Designed for diverse applications from hydroponics to brewing, it boasts IP67 waterproofing, up to 2000 hours of battery life, and smart diagnostics, making it a reliable, cost-effective tool for precise pH measurement.

## Description

"The top-rated pH tester on desertcart 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. "

Review: The perfect pH meter - I love this meter. It’s easy to calibrate. The readings are fast and accurate. It reaches a conclusion quickly and will hold the reading after being removed from the solution. The small refillable jars for calibration solutions make this a great little kit. Perfect for the lab or home enthusiast.
Review: Easy to use, calibrate, and clean. - I use this for mead making where pH is an important factor for recipe development at different stages of the process. It’s easy to use, easy to calibrate, easy to read, and easy to clean. Great value for what seems to be a reliable, lab quality product.

## 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 |
|---------------|-------|
| ASIN | B077Z6LF91 |
| Batteries | 4 AAA batteries required. (included) |
| Best Sellers Rank | #3,384 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Lab pH Meters |
| Date First Available | December 7, 2017 |
| Item Weight | 3.3 pounds |
| Item model number | AI209-T |
| Manufacturer | Apera Instruments |
| Product Dimensions | 7 x 1.6 x 1.2 inches |

## Images

![AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration - Image 1](https://m.media-amazon.com/images/I/612b36RUNML.jpg)

## Questions & Answers

**Q: When calibrating, should i wait until the pen reaches the ph the solution should be before i go to the next step. or when the smiley face pops up?**
A: Smiley face. That said, when taking readings, even in the calibration solution, remember to swirl the meter in the solution with some briskness. I found that my pH pen continues to walk down or walk up almost a half a PH point just from swirling it in the solution.

**Q: So does this ph tester come pre calibrated? Thats what the user manual makes it sound like. I already have the 7 & 9 range just not 10.**
A: The base pen comes with enough solution to last at least a year of biweekly checking/  calibrating. The full kit comes with big bottles of all 3 ph ranges and a storage solution. I havnt even had to open my large bottles.  But I plan to next month just to exchange my small bottles (I've used for almost a year now) 
I have maybe had to calibrate 2 times and that was just to be safe. My water stays the same so I know what it is before and after my nutrient feeds so if it ever reads off, I just check it on a solution for the proper readout.

**Q: Anybody had success using this for fermentation? I'm hoping to find one that's easy to use/store that I can use for fermenting hot sauces, etc.**
A: I use mine specifically for Horticulture and I have zero experience in fermentation; that said, I believe this will still be a great tool for your purposes.

**Q: Can this tester be used to test ph for medical / intravenous solutions? i am looking for something that is accurate to ~0.1ph. any experience?**
A: It does measure to the tenth (0.0).  The other Apera model PC60, measures to the hundredth (0.00).

I use the PH20 and noticed when making changes to your solution, change down reads fairly quickly. Changes to raise PH reads more slowly, so give it a few minutes to stabilize the reading.

Also I use the 7.0 calibration fluid in the cap when storing between uses.  Helps notice if recalibration is needed.
Always rinse and dry probe before storing or testing.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The perfect pH meter
*by M***R on January 3, 2026*

I love this meter. It’s easy to calibrate. The readings are fast and accurate. It reaches a conclusion quickly and will hold the reading after being removed from the solution. The small refillable jars for calibration solutions make this a great little kit. Perfect for the lab or home enthusiast.

### ⭐⭐⭐⭐⭐ Easy to use, calibrate, and clean.
*by N***N on December 8, 2025*

I use this for mead making where pH is an important factor for recipe development at different stages of the process. It’s easy to use, easy to calibrate, easy to read, and easy to clean. Great value for what seems to be a reliable, lab quality product.

### ⭐⭐⭐⭐⭐ Excellent. It feels like a lab equipment. Perfect presentation
*by R***E on November 23, 2025*

Es excelente para medir el Ph de agua. Para aquello que quieran medir mas de 9 ph. Ellos son claros que el líquido para su medicion de 14 ph o 12 ph se compra por aparte. En mi caso no pienso medir nada mas allá de 9. También, el equipo trae códigos escaneables que lo llevan a ver videos de Youtube, útiles para la calibración y su uso. It is excellent to do ph measurements. By the way, for those who wants to do measurements above 9 ph levels. They have set in multiple times that the liquid with the 14 ph or 12 ph is sold apart, it is not include. In my case, I am not going to measure more than 9 ph. In addition, the equipment include codes that you can scan to go to their Youtube channel to visualize the calibration steps and a quick review of it (In case you do not want to read all the instructions).

## Frequently Bought Together

- APERA INSTRUMENTS AI209-T Value Series PH20 pH Tester Combo Kit, including the Maintenance Set, and a CalPod Solution Holder for Easy Calibration
- 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 Slovakia*
*Store origin: SK*
*Last updated: 2026-01-31*