Patent ID: 8658191

Claim:
A method of disinfecting a medical or dental suction hose comprising: a) sucking a thickened, ready-to-use disinfectant composition into an interior suction region of the medical or dental suction hose so as to form a substantially even layer along an inside of the suction hose, the composition having a pH value of from 9 to 12, the composition comprising: (i) an active substance having the formula wherein R 1 represents an alkyl or alkenyl group with 8 to 18 carbon atoms and R 2 is selected from the group consisting of hydrogen, an alkyl group with 1 to 4 carbon atoms, an amino alkyl group with 2 to 4 carbon atoms, and Glucoprotamin; and (ii) a cellulosic thickener present in an amount sufficient to provide a viscosity between 350 and 1000 mPas when measured by a Brookfield digital viscometer at 20° C. using spindle no. 2 at a rotation of 12 revolutions per minute; b) allowing the composition to stay in the interior suction region of the suction hose a period of time, wherein the pH of the composition during this period of time remains from 9 to 12; and c) rinsing the suction hose with water.