--- product_id: 31619366 title: "AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration" brand: "apera instruments" price: "390.91 DT" currency: TND in_stock: true category: "Apera Instruments" url: https://www.desertcart.tn/products/31619366-ai213-value-series-tds20-waterproof-tds-pocket-tester-kit-accuracy store_origin: TN region: Tunisia --- # ±1% accuracy IP67 waterproof rating 1000 hrs battery life AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit, Accuracy: ±1% F.S, 2-Point Auto. Calibration **Brand:** apera instruments **Price:** 390.91 DT **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of water quality with precision and durability in your pocket! ## Quick Answers - **What is this?** 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?** 390.91 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/31619366-ai213-value-series-tds20-waterproof-tds-pocket-tester-kit-accuracy) ## 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 - • **Long-Lasting Power:** Up to 1000 hours of operation powered by 4 AAA batteries—stay testing without interruptions. - • **Effortless Calibration:** 2-point auto calibration with buffer recognition keeps measurements hassle-free and precise. - • **Precision You Can Trust:** ±1% full scale accuracy ensures reliable water quality readings every time. - • **All-in-One Professional Kit:** Comes complete with calibration solutions, batteries, lanyard, and a sleek carrying case for on-the-go testing. - • **Built to Brave the Elements:** IP67 waterproof design means your tester works flawlessly, rain or shine. ## Overview The Apera Instruments AI213 TDS20 Pocket Tester Kit delivers professional-grade total dissolved solids measurement with ±1% accuracy, a wide 0-10,000 ppm range, and IP67 waterproof protection. Featuring 2-point auto calibration, automatic temperature compensation, and a large dual-display LCD, it’s designed for reliable, on-the-go water testing across multiple applications. The complete kit includes calibration solutions, batteries, and a carrying case, offering up to 1000 hours of battery life powered by AAA batteries, all certified under ISO 9001:2015 quality standards. ## Description Apera Instruments TDS20 Pocket TDS Tester Kit is built for professional TDS measurement of general water solutions, 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. ## 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 | #114,355 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Conductivity Meters & Accessories | | Date First Available | April 22, 2016 | | Item Weight | 3.9 ounces | | Item model number | AI213 | | Manufacturer | Apera Instruments | | Product Dimensions | 7.72 x 3.39 x 1.3 inches | ## Images ![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) ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/31619366-ai213-value-series-tds20-waterproof-tds-pocket-tester-kit-accuracy](https://www.desertcart.tn/products/31619366-ai213-value-series-tds20-waterproof-tds-pocket-tester-kit-accuracy) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-09-02*