Our paper-based water quality test strips are perfect for testing the pH, chlorine, hardness, alkalinity, nitrite, nitrate, and lead levels in drinking water, aquariums, swimming pools, industrial water, ponds, and hot springs. They are easy to use, easy to read, and provide quick and accurate results. Our non-leakage test paper has a long shelf life and is small and convenient for easy carrying. Test your water anytime, anywhere with our 50-pack water quality test kit Features 1. Suitable for drinking water, aquarium, swimming pool, industrial water, pond, hot spring water, etc. 2. Easy to read. 3. Non leakage test paper. 4.Long shelf life. 5. Small and convenient, easy to carry. Specifications: Material:Paper Size:9 x 1cm Weight:40 g Package Included: 50x Water Quality Test Paper