If your trying to find minimum value in a series of columns:

=MIN(IF(AB3:IB3<>"",AB3:IB3))

Enter with Ctrl+Shift+Enter (array formula)

HTH

"JRM" wrote:

> How can I compare multiple column, returning the lowest value for the column,
> but ensuring all blank cells are ignored.
>
> Current Sample formula
> =IF(AB3<=AC3,"AB",IF(AC3<=AE3,"AC",IF(AE3<=AF3,"AE","AF")))