Features: 1. Pool effervescent tablet is very practical. It helps prevent algae and increase water clarity. 2. Pool effervescent tablet is effectively. It can reduce the amount of algaecide and flocculant you use. 3. Disinfecting the water, no more dirty pools, creating a safer, cleaner and more enjoyable swimming experience. 4. To prevent chlorine loss from direct sunlight, these products help protect your water from harmful sunlight and stabilize them. 5. Fast, simple and accurate measurement method, very suitable for water analysis in swimming pools and hot tubs. Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect 2.Please allow 1-3cm deviation due to manual measurement Material: Trichloroisocyanuric acid Size: As shown Package List: 100pcs x Effervescent Chlorine Tablets<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store