Tests the pH with examination drops or a digital pH examination meter gives you a better idea of just how long the filter everyday living could transform by leaving the pouch in all the time. We endorse replacing your pH ON-THE-GO filter pouch each and every 416 cups/26 gallons/98liters - http://alkaline-anytime-sport10998.educationalimpactblog.com/28368268/not-known-facts-about-ph-hydrate