A 750-mL size inside-coated PET wine bottle is available. The Plasmax coating layer, described as an ultra-thin, crystal clear, impermeable and completely nonreactive silica (SiOx), is already in use with the co.'s 187-mL wine bottle. Reportedly not affecting the bottle's recyclability, the coating, its mfr. says, maintains the appearance, taste and shelf life of wine while preventing oxygen permeation and any carbon dioxide loss.