Feature: 1. Designed for pool & spa water quality test, analyzes three chemical factors: free chlorine/bromine, PH, alkalinity. 2. Suitable for drinking water, aquarium, swimming pools and spas, industrial water, pond, hot spring water. 3. Sensitive reagent swimming pool strips, quickly get the precise results. It only takes 0-1 minute to test the sample. 4. 50 swimming pool test strips are placed in a storage bottle, the packaging is not easy to damage, and can effectively prevent moisture. 5. Classical colorimetric analysis, multi-level detection requirements, visual reading with colorimetric card. Specification: Item Type: Test Strips Material: Test Paper Color: As shown in the picture Weight: Approx.30g/1.1oz Test Material: Free chlorine/bromine, pH, alkalinity Storage Method: Cool and dry place, avoid high temperature . Package List: 1 x Bottle of Test Strips(5 pack/bottle, 10 strip/pack, total 50 strips) Note: 1. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 2. Every small pack is the same