“…Plastic bags are a modern and very elegant bloodtransfusion equipment but the relative importance of the advantages and disadvantages has not yet been solved (Dudley, Richmond, McNair, Paton, and Cumming, 1958;Gibson, 1958;Kissmeyer-Nielsen, 1960). It is certain, however, that plastic equipment, at least for the present, is expensive in comparison with the conventional glass equipment.…”