






💧 Stay ahead with precision—never second guess your water quality again!
The Apera Instruments TDS20 is a pocket-sized, waterproof TDS meter offering ±1% accuracy and ±0.5˚C temperature sensing. Featuring auto calibration with buffer recognition, auto temperature compensation (0-50˚C), and a dual LCD display, it delivers reliable water quality readings. The complete kit includes calibration solutions, batteries, a lanyard, and a carrying case, supporting up to 1000 hours of continuous use powered by included AAA batteries.







| Manufacturer | Apera |
| Part number | AI213 |
| Item Weight | 110 g |
| Product Dimensions | 19.6 x 8.6 x 3.3 cm; 110.56 g |
| Batteries | 4 AAA batteries required. (included) |
| Item model number | AI213 |
| Style | Single |
| Material | Plastic |
| Item Package Quantity | 1 |
| Included components | 1 Pocket tester, 1 set of buffer solutions, 2 batteries, 1 case |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
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