In a large bowl combine water and lemon juice and put aside. Mix spices and vanilla powder in another, smaller bowl and put aside.
Slice apples with a mandolin or food processor attachment. Dip apple slices prepared lemon water and then place on mesh lined dehydrator sheets. Sprinkle with spice mix from smaller dish and dehydrate at 105F for 8 hours or until dried and leathery.
Recipe by @OmNomAlly at https://omnomally.com/2014/01/21/vanilla-spice-apple-chips/