2025-08-16 00:00:00 The PFEIFFER & MAY XtraClear App gives you the option of setting up a backwash reminder for your XtraClear filters. A location can be created in the app for each XtraClear filter. You can then scan the QR code on the device using a smartphone or tablet and assign the filter to the respective location. You also have the option of choosing between several backwash intervals. The reminder takes place via calendar entry and push message.