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💧 Test smarter, not harder — precision water analysis in your pocket!
The Apera Instruments AI213 TDS20 Pocket Tester Kit delivers professional-grade total dissolved solids measurement with ±1% accuracy, 2-point auto calibration, and automatic temperature compensation from 0 to 50°C. Featuring a durable IP67 waterproof design and a large dual-display LCD, it offers up to 1000 hours of battery life powered by 4 included AAA batteries. The kit comes complete with calibration solutions, batteries, a lanyard, and a portable carrying case, making it ideal for water quality testing in agriculture, aquaculture, pools, and environmental monitoring.






























| ASIN | B01ENFOIN2 |
| Batteries | 4 AAA batteries required. (included) |
| Best Sellers Rank | #93,158 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #18 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 |
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