公开(公告)号：BRPI0410168A

公开(公告)日：2006-05-16

申请号：BRPI0410168

申请日：2004-05-06

Applicant: ECOLAB INC

Inventor： STROTHOFF WERNER ,  TROLL WINFRIED ,  CARLHORFF GEROLD

IPC: A47L15/00 ,  A47L15/23 ,  C11D3/02 ,  C11D3/20 ,  C11D7/06 ,  C11D7/08 ,  A47L15/14

Abstract: The invention concerns a method for cleaning articles in a dish washing machine comprising an alkaline and an acidic cleaning step and at least one additional alkaline cleaning step, characterized in that a) in a hood dish washing machine there is a first alkaline cleaning step with an aqueous cleaning solution having a pH-value higher than 9, b) the first alkaline cleaning step is followed by a first acidic cleaning step with an aqueous cleaning solution having a pH-value lower than 5, c) the first acidic cleaning step is followed by at least a second alkaline cleaning step with an aqueous cleaning solution having a pH-value higher than 9.