Features: 1. Easy to clean: the electrode protective cover can be removed for cleaning the probe and the sheath 2. Fast measurement: due to the exquisite sensor element, a measurement can be completed in 2‑6 seconds 3. Easy to use: the pen electrode can be directly inserted into the mouth of the drinking bottle for measurement 4. Made of high-quality ABS plastic material, the product is excellent, sturdy and durable, and has a long service life 5. Application scope: cleanness of purified water production and drinking, boiler water, swimming pool water Specification: Item Type: Water Quality Tester Product Material: ABS Product Weight: Approx 56g/2.0oz Product Size: Approx 15.3 x 3cm/6.0 x 1.2in Battery Information: 2 x Button Batteries LR44 (Not Included) Measuring Range: 0~9990ppm Accuracy: ±2% (F.S) Automatic Temperature Compensation: 0℃~60℃ Working Temperature: 0℃~50℃ Application scope: cleanness of purified water production and drinking, boiler water, swimming pool water,etc Package List: 1 x Water Quality Test Pen 1 x Manual 1 x Leather Case Features Easy to clean: Removable electrode protective cover for hassle-free probe and sheath cleaning. Fast measurement: Exquisite sensor element enables quick and accurate readings in just 2-6 seconds. Convenient to use: Simply insert the pen electrode directly into the drinking bottle for instant measurements. Durable construction: Made of high-quality ABS plastic, ensuring excellent durability and a long product lifespan. Wide application scope: Ideal for testing the cleanliness of purified water, drinking water, boiler water, and swimming pool water.