. rinse thoroughly in cold water; . treat for 5 min at the boil in a solution containing: 2 parts Lissapol N 2 parts activated charcoal 1,000 parts water; using a liquor-to-cloth ratio of about 30:1; . rinse in cold water; . treat for 5 min at 140'F in a solution containing 2 parts "Lissapol" N per 1,000 parts water; . rinse thoroughly in cold water and dry.