6 In 1 Swimming Pool Test Paper Ph Test Paper Water Quality Test Paper Residual Chlorine Water Quality Ph Residual Chlorineproduct 1. Simple and convenient operation colorimetric test: use colorimetric method to test cyanic acid, total hardness, total bromine, residual chlorine, pH value, total alkalinity in water, simple, fast and accurate, the color chart is easy to read, no fadeover time2. Easy to carry: 50 test paper per bottle. Easy to carry and store to ensure long-term use3. Affordable: Accurate data saves time and money, and the strip design takes into account different application scenarios such as commercial use and home use. It is an efficient and accurate method for testing chemicals in water.4. Wide application: suitable for different water quality testing, our products are widely used in tap water, drinking water, aquarium, pond water and other scenarios to effectively help our customers understand chemical substances in water5. High accuracy.Test time: 60sDelivery quantity: 50 pieces/bottleWarm prompt:1. As different measuring methods, it will occur 1-3 cm deviation about the items, please ensure that it is okay for you before ordering.2. Because of different monitors and lamplight, the picture may not reflect the actual color of the item, really thank you for your kind understanding3. Only the above package contents, excluding other products.