Upgraded 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 ranges from 7 to 10 depending on your faucet water. Can effectively filter fluoride, chlorine, dirt, harmful metals, and other substances from water, removing odors to provide clean and healthy drinking water. Certified by SGS, uses natural coconut shell activated carbon, ion exchange resin, and PP meltblown fiber. Easy to install filter; the filter on the cap can be easily inserted and removed. Filter first time use instructions: Clean the filter with running water for about 1 minute, then place the filter into water and shake gently for about 2 minutes. This is the best way to use the filter to prevent leaks and ensure smooth filtration. On average, replace the filter every 40 gallons or approximately every 1 month to keep tap water healthier and tasting better.