--- product_id: 49302416 title: "Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C" brand: "apera instruments" price: "1 kr" currency: DKK in_stock: false url: https://www.desertcart.dk/products/49302416-apera-instruments-ai213-pocket-tester-tds20-value-waterproof-tds-complete store_origin: DK region: Denmark --- # Waterproof for rugged use ±1% accuracy precision 1000 hrs battery life Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C **Brand:** apera instruments **Price:** 1 kr **Availability:** ❌ Out of Stock ## Summary > 💧 Pocket precision meets pro-level reliability — never miss a drop! ## Quick Answers - **What is this?** Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C by apera instruments - **How much does it cost?** 1 kr with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/49302416-apera-instruments-ai213-pocket-tester-tds20-value-waterproof-tds-complete) ## 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 Calibration:** Auto buffer recognition and easy 1-2 point calibration keep your meter ready instantly. - • **Precision You Can Trust:** ±1% full scale accuracy ensures reliable water quality readings every time. - • **Built for Real-World Use:** Waterproof design and rugged carrying case make it your go-to field companion. - • **Complete Ready-to-Go Kit:** Includes calibration solutions, batteries, lanyard, and portable case for immediate use. - • **Smart Temperature Compensation:** Auto Temp. Compensation (0-50°C) guarantees accuracy across environments. ## Overview The Apera Instruments TDS20 is a pocket-sized, waterproof TDS meter delivering ±1% accuracy with auto temperature compensation and auto calibration. Designed for professionals and enthusiasts alike, it offers a dual-display LCD, long battery life (up to 1000 hours), and comes as a complete kit with calibration solutions and accessories. Ideal for water quality testing in agriculture, aquaculture, pools, and drinking water, it combines precision, portability, and ease of use in one sleek package. ## Description Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C : desertcart.co.uk: Business, Industry & Science ## Features - Easy Auto Calibration with buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50.0˚C); Accuracy: ±1% F.S, 0.5˚C; Range: 0-100.0 ppm, 0-1000 ppm, 0-10.0 ppt - EASY Auto Calibration with auto buffer recognition; Auto Temp. Compensation (ATC) ensures accuracy in variant temperatures (0-50.0˚C) - LARGE CLEAR LCD with DUAL Display of temp./ppt, and REMINDERS of completed calibrations and stable readings - COMPLETE KIT with READY-TO-USE calibration solutions, batteries, and a lanyard in a portable carrying case - up to 1000 hours' continuous operation time powered by AAA batteries ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01ENFOIN2 | | Batteries | 4 AAA batteries required. (included) | | Batteries Required? | Yes | | Batteries included? | Yes | | Battery Cell Type | Alkaline | | Best Sellers Rank | 262,097 in Garden ( See Top 100 in Garden ) 45 in Water Garden & Pond Test Kits | | Customer Reviews | 4.4 4.4 out of 5 stars (245) | | Date First Available | 27 Sept. 2016 | | Guaranteed software updates until | unknown | | Included components | 1 Pocket tester, 1 set of buffer solutions, 2 batteries, 1 case | | Item Package Quantity | 1 | | Item Weight | 110 g | | Item model number | AI213 | | Manufacturer | Apera | | Material | Plastic | | Part number | AI213 | | Product Dimensions | 19.6 x 8.6 x 3.3 cm; 110.56 g | | Style | Single | ## Images ![Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C - Image 1](https://m.media-amazon.com/images/I/61Ao3j-VVrL.jpg) ![Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C - Image 2](https://m.media-amazon.com/images/I/719hWuT8auL.jpg) ![Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C - Image 3](https://m.media-amazon.com/images/I/91PyXvrMveL.jpg) ![Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C - Image 4](https://m.media-amazon.com/images/I/91zXB2cPerL.jpg) ![Apera Instruments, AI213 Pocket Tester, TDS20 Value, Waterproof TDS, Complete Kit, Accuracy: 1% F.S, 0.5 Degree C - Image 5](https://m.media-amazon.com/images/I/81lEgb3Qi-L.jpg) ## Available Options This product comes in different **Style** options. ## 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.dk/products/49302416-apera-instruments-ai213-pocket-tester-tds20-value-waterproof-tds-complete](https://www.desertcart.dk/products/49302416-apera-instruments-ai213-pocket-tester-tds20-value-waterproof-tds-complete) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-08-16*