Detergent compositions for endoscope washers

Abstract

The present invention relates to [1] a detergent composition for endoscope washers, including a nonionic surfactant (A) represented by the following formula (1), a branched-chain fatty acid having not less than 6 and not more than 10 carbon atoms or a salt thereof (B), a defoaming agent (C) and water,R—O-[(EO)/(PO)]—H  (1)wherein R represents a branched-chain alkyl group having not less than 7 and not more than 9 carbon atoms; EO represents an ethanediyloxy group; PO represents a propanediyloxy group; m and n each represent an average molar number of addition of the ethanediyloxy or propanediyloxy group in which m is a number of not less than 1 and not more than 30, and n is a number of not less than 2 and not more than 50; and the mark '/' represents that EO and PO may be added either in a random form or in a block form, and an order of addition of EO and PO is optional; and [2] a method of washing an endoscope using an endoscope washer, including the step of washing the endoscope with a mixture including the detergent composition for endoscope washers as described in the above [1], and a protease. The present invention provides a detergent composition for endoscope washers which is less foamed even at a low temperature and is excellent in detergency and storage stability, and a method of washing an endoscope using an endoscope washer in which the above detergent composition is used.