---
product_id: 31619366
title: "Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration"
brand: "apera instruments"
price: "₪328"
currency: ILS
in_stock: true
reviews_count: 13
category: "Apera Instruments"
url: https://www.desertcart.co.il/products/31619366-apera-instruments-ai213-value-series-tds20-waterproof-tds-pocket-tester
store_origin: IL
region: Israel
---

# ±1% accuracy precision IP67 waterproof durability 1000 hrs battery life Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration

**Brand:** apera instruments
**Price:** ₪328
**Availability:** ✅ In Stock

## Summary

> 💧 Stay ahead of the curve with precision water testing that fits in your pocket!

## Quick Answers

- **What is this?** Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration by apera instruments
- **How much does it cost?** ₪328 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/31619366-apera-instruments-ai213-value-series-tds20-waterproof-tds-pocket-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

- • **All-in-One Ready Kit:** Comes complete with calibration solutions, batteries, lanyard, and rugged carrying case—always prepared, always professional.
- • **Power Through Your Day:** Up to 1000 hours of continuous use powered by AAA batteries, so you never miss a measurement.
- • **Built to Brave the Elements:** IP67 waterproof design ensures reliable performance rain or shine.
- • **Precision that Professionals Trust:** Achieve lab-grade ±1% F.S. accuracy for flawless water quality insights.
- • **Effortless Calibration, Zero Guesswork:** 2-point auto calibration with auto buffer recognition keeps readings sharp and simple.

## Overview

The Apera Instruments AI213 TDS20 Pocket Tester Kit delivers professional-grade water quality measurement with ±1% accuracy, IP67 waterproof protection, and 2-point auto calibration. Featuring a large dual-display LCD, auto temperature compensation (0-50°C), and a durable Brush-Resistant Platinum Black sensor, it ensures consistent, reliable readings across a wide range (0-10,000 ppm). The complete kit includes calibration solutions, batteries, and a portable case, offering up to 1000 hours of battery life for on-the-go professionals in agriculture, aquaculture, environmental monitoring, and more.

## Description

Apera Instruments TDS20 Pocket TDS Tester Kit is built for professional TDS measurement of general water soliutions, including tap water, agriculture, aquaculture, pools& spas, education, environmental monitoring, etc. Range: 0-100.0 ppm, 0-1000 ppm, 0-10.0 ppt (10,000 ppm), Accuracy: ±1% F.S. 1-2 points auto. calibration, 0 to 50˚C auto. temp. compensation. The BPB (Brush-Resistant Platinum Black) sensor adopts Apera's special processing technology, which minimizes electrode polarization, expands measuring range, and increases firmness of the electrode, hence ensuring a much higher accuracy and consistency in a wide-range TDS measurement than traditional stainless steel electrodes, and is easy to clean.The large LCD screen has ppm/temp. value dual display and indications of completed calibrations and stable readings. Practical functions to make your TDS testing easier and more reliable: 2-point auto calibration, 0 to 50˚C auto. temp. compensation. Customizable TDS factor from 0.4 to 1.0. Self-diagnosis with out-of-range and low battery warning.Complete kit: TDS20 meter, 2 bottles of calibration solutions, AAA batteries, and a lanyard all in a portable carrying case. IP67 water-resistant. Up to 1000 hours of use powered by 4 AAA batteries. Low power alarm and auto. power off in 8 min if no operation. The product is CE and RoHS certified, and is manufactured under an ISO 9001:2015 certified quality system.

Review: Great TDS Pocket Tester - I ordered this TDS Pocket Tester because I was so impressed with the Apera PH meter. They seems to be high quality and built with lasting materials. It not your ordinary cheap light weight plastic PH meter. It is a little pricey, but this one will last! You will also get awesome Accuracy: ±1% F.S. Calibration is easy and exactly the same as you would do for the PH meter. In fact, both PH and TDS calibration is on the same page, same buttons and all. This make it very easy to remember how to calibrate without different manuals. I really like / appreciate the case, calibration and 2 calibration solutions are stored in a really nice strong case. Keeping everything together and ready to use is Key!! I have just started using the TDS meter and getting use to liquid nutrients. This is the reason I purchased the meter. From what I see so far it it a great TDS meter. I have nothing to compare to but just the impressive quality tells me I should be good with with one!
Review: Works well, good middle ground cost option - Works great, sort of awkward to learn at first but ive had no issues once picking things up over time. Make sure to buy more of the solution in the near future. I calibrate maybe once per week.

## Features

- Accuracy: ±1% F.S, ±0.5˚C; Range: 0-10,000 ppm (10 ppt)
- EASY Auto Calibration with auto buffer recognition; 0 to 50˚C Auto. Temp. Compensation
- Large LCD with dual display of temp./ppt, and reminders of completed calibrations and stable readings
- Complete kit with calibration solutions, batteries, and a lanyard in a portable carrying case
- up to 1000 hours' operation powered by AAA batteries

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01ENFOIN2 |
| Batteries | 4 AAA batteries required. (included) |
| Best Sellers Rank | #42,535 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #5 in Conductivity Meters & Accessories |
| Date First Available | April 22, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.9 ounces |
| Item model number | AI213 |
| Manufacturer | Apera Instruments |
| Product Dimensions | 7.72 x 3.39 x 1.3 inches |

## Images

![Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration - Image 1](https://m.media-amazon.com/images/I/61Ao3j-VVrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great TDS Pocket Tester
*by C***. on June 12, 2024*

I ordered this TDS Pocket Tester because I was so impressed with the Apera PH meter. They seems to be high quality and built with lasting materials. It not your ordinary cheap light weight plastic PH meter. It is a little pricey, but this one will last! You will also get awesome Accuracy: ±1% F.S. Calibration is easy and exactly the same as you would do for the PH meter. In fact, both PH and TDS calibration is on the same page, same buttons and all. This make it very easy to remember how to calibrate without different manuals. I really like / appreciate the case, calibration and 2 calibration solutions are stored in a really nice strong case. Keeping everything together and ready to use is Key!! I have just started using the TDS meter and getting use to liquid nutrients. This is the reason I purchased the meter. From what I see so far it it a great TDS meter. I have nothing to compare to but just the impressive quality tells me I should be good with with one!

### ⭐⭐⭐⭐⭐ Works well, good middle ground cost option
*by L***V on October 25, 2025*

Works great, sort of awkward to learn at first but ive had no issues once picking things up over time. Make sure to buy more of the solution in the near future. I calibrate maybe once per week.

### ⭐⭐⭐⭐⭐ Another perfect APERA
*by A***0 on April 5, 2025*

Same as the PH meter but the TDS version. Excellent Metter, brand is not to be bothered because apera is definitely up there in quality for the price compared to the blue guys meter. Easy to use, easy to calibrate and easy to store with distilled water. Only had it for 2 months but so far it's on point and have not had to calibrate it since I got it.

## Frequently Bought Together

- Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration
- APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy
- General Hydroponics pH Control Kit For A Balanced Nutrient Solution

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-02-24*