  The classical theorem of Jewett and Krieger gives a strictly ergodic model
for any ergodic measure preserving system. An extension of this result for
non-ergodic systems was given many years ago by George Hansel. He constructed,
for any measure preserving system, a strictly uniform model, i.e. a compact
space which admits an upper semicontinuous decomposition into strictly ergodic
models of the ergodic components of the measure. In this note we give a new
proof of a stronger result by adding the condition of purity, which controls
the set of ergodic measures that appear in the strictly uniform model.
