For steam cleaning and high-pressure cleaners, adjust chemical proportioning unit to give a ratio of 1-part UNIDET-L to between 50 and 200 parts of water, depending on the degree of soiling. For manual cleaning of equipment, rail coaches, trucks, carpets, upholstery etc., dilute 1-part UNIDET-L to 10-parts of water, spray or brush onto soiled surfaces, allow to stand for 5 ? 10 minutes and rinse off with high-pressure water or steam.