Upgrated Water Filter:7 layers of filtration to make the water weak in alkaline. Depending on the source of the water, the pH is usually increased by 0.5 to 2 or more. Filtered pH from 7 - 10 depending on your faucet water. Can effectively filter the water of fluoride, chlorine, dirt, harmful metals and other substances in the water, remove the odor, to provide clean and healthy drinking water. Through the SGS certification, the use of natural coconut shell activity, ion exchange resin, PP meltblown fiber. Easy to install the filter, the filter on the cap can be easily inserted and removed Filter first time use instructions: Clean the filter with running water about 1 minute, then put the filter soak into water and shake gently about 2 minute. This is the best way to use the filter, will not leak, and smoothly flow of filtration.. On average, every 40 gallons or about every 1 months to replace the filter, keep the tap water healthier and taste better 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-Minnanxin