Features: Ensures your pool or spa is in perfect condition with Test Strips, offering comprehensive water quality analysis for a safe and enjoyable swimming experience. These easy to use test strips provide instants result for total chlorine, freechlorine/bromine, total alkalinity, cyanuric acid, and total hardness, helping you maintain balanced water chemistry with precisions. For pool owners, spa enthusiasts, and aquaculture professional who demand accurate and regular monitoring of water conditions. Application across various water environment, including home pools, hot tubs, aquariums, these strips are essential tool for proactives water quality management. Ensures you have a supply for continuous water health assessment, keep your aquatic clear and algaefree. Specifications: Component:Paper Size:As Picture Shown Package Includes: 50 Strips Test Strips note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.