Patent ID: 7786063

Claim:
A clean-in-place (CIP) method which comprises the steps of: (1) contacting a material to be cleaned with a cleaning medium (I) comprising: (A) from 0.01 to 20 wt % of a C10 to C14 aliphatic hydrocarbon solvent and having an SP value of 6 to 9 at 25° C.; and (B) from 0.01 to 20 wt % of a nonionic surfactant; and thereafter, (2) contacting the material to be cleaned with a cleaning medium (II) comprising: (A) less than 0.5 wt % of a C10 to C14 aliphatic hydrocarbon solvent having an SP value of 6 to 9 at 25° C.; and (B) a nonionic surfactant.