[Resolved] What plastic material is used for the Autopot tanks? Is it food grade? To Parent Forum April 1, 2020 at 4:09 pm #361 rbParticipant What plastic material is used for the water tanks/reservoirs? Is it food grade? Thanks April 1, 2020 at 4:10 pm #363 JoshKeymaster The white Flexitank Pro reservoirs are water safe. You must be logged in to reply to this topic.