(AP) — A bill designed to keep Nebraska minors from using electronic cigarettes has won final approval from lawmakers.

Senators voted 48-0 on Thursday to send the proposal to Gov. Dave Heineman. The bill would outlaw the sale of so-called e-cigarettes to anyone younger than 18 years old. Minors caught using the product could face a misdemeanor charge.

E-cigarettes are battery-powered devices that give users a puff of water vapor and nicotine, sometimes with flavors.

Sen. Russ Karpisek of Wilber, the bill sponsor, says there hasn’t been enough study to know if e-cigarettes are safe.