THE EFFECT OF FOAM ON THE WASHING PERFORM ANCE WITH REGARD TO NEW CONTROL-SYSTEMS FOR WASHING MACHINES (FUZZY-LOGIC)

The formation of foam during die washing process can markedly affect t he washing result. This was studied by determinations of the primary w ashing power of a heavy-duty detergent with defoamers of various stren gths. The effects of the new systems on foam formation and on other pa rameters that influence primary washing performance were investigated with washing machines that were identical in all respects except the e lectronics that control the washing programs. The rue of the new contr ol system has major consequences for the use of these washing machines as test instruments for nerv detergents and/or new detergent componen ts. Above all a high degree of standardization is required.