Types and Characteristics Nature of The Stain Stains Acid Base Fats and Oils Perspiration, urine (fresh), vinegar, medicines containing nitric acid, picric acid, etc. Perspiration, urine (old stains). Butter, cream, margarine, edible oils, machine oil, hair oil, lard, wax. Grease - Mineral oil Metallic Metalloid Natural dyes and pigments in solution dispersion or emulsion in aqueous medium Synthetic dyes and pigments in solution dispersion or emulsion in aqueous medium. Sugar solutions and colouring matter. Solutions , dispersions or emulsion in fats or oils Solutions, dispersions or emulsions of dyes or pigments in organic solvents. Proteinic Miscellaneous Paraffin, vaseline , turpeniine , car grease. Rust , silver nitrate, brass, copper salts, black ink,chrominum salts, etc. Iodine tinctures [ Herbs, vegetables, flowers, fruit juices, wines, tea, coffee, cocoa, chocolate, henna, beetle-leaf, tobacco. Inks, markers, hair dyes, type-writer ribbons, water colours , mercurochrome, gentian violet . Jams , jellies, syrups, soft drinks, puddings, etc. Mayonnaise , sauces, ketchup, lipstick, rouge , mascara, printing ink, polishes, tar, smoke, rayons . Oil paints, lacquer, varnish, nail-polish. Blood , egg , meat juice, fish slime, milk . Scorch, Mildew,certain medicines