If you wish to go for a sophisticated filter, You may also invest in their PH002 ultrafiltration membrane filter to combine with the PH001. As well as, they are also suitable with the opposite models of the brand. Why do you have to avoid the pH Revive alkaline water filter http://hydratewaterbottle98654.blogsidea.com/10529456/a-review-of-water-ph-testing-drops