Most AquaPure devices are easy to open. However, on some models, the lid may be difficult to remove, especially if it isn’t screwed on straight or if there is moisture or sand between the lid and the device. It is therefore recommended that you only open the AquaPure when it is dry. If you still need to open the cover and it is stuck, try using a fork with a plastic handle. Insert the tip of the fork into the smallest opening of a slot in the cover to remove it.