COLUMBIA, S.C. - The Senate approved a bill on Thursday that would let bars and restaurants dump minibottles and serve liquor from full-sized bottles.

But the legislation clashes with some details in the version approved Tuesday by the House Ways and Means Committee.

It's unclear whether the differences will delay efforts to move bars and restaurants to free-poured drinks by this fall. That's nearly a year after voters approved ending South Carolina's status as the only state in the nation requiring the 1.7-ounce minibottle for poured drinks.

The Senate's version keeps much of the existing liquor distribution system intact. A handful of big wholesalers would sell liquor to distributors who would sell to bars and restaurants.

Senate Judiciary Committee Chairman Glenn McConnell says that keeps smaller distributors from competing on a price basis with the wholesalers that get their product cheaper.

The Ways and Means Committee approved a bill that lets four wholesalers directly sell to bars and restaurants.

That version of the bill also prohibits bars and restaurants from using 1.75 liter bottles. The Senate bill doesn't have that restriction.