Option Explicit
Sub Epurage()
Dim dlg&, lig&: Application.ScreenUpdating = 0
dlg = Cells(Rows.Count, "A").End(xlUp).Row
For lig = 2 To dlg
With Cells(lig, 1)
If .Value = "" Then .Value = Empty
End With
Next lig
End Sub
Sub test()
Cells(Rows.Count, "A").End(xlUp)(1).Select
End Sub
Sub test2()
Application.ScreenUpdating = 0
Worksheets("modèle_cellules").Columns("A").Copy Worksheets("test").Columns("A")
End Sub