Freestyle has 1-liter Air-Evac ( http://www.freestylephoto.biz/5141-A...Bottle-1-Liter ) and 2-liter Air-Evac ( http://www.freestylephoto.biz/5142-A...Bottle-2-Liter ) bottles. I've never used them, though. i keep my chems in plastic water bottles and fill up any extra space in the bottles with glass marbles that I get from Hobby Lobby