“…Purification of phosphoric acid (79, 226, 327) and hydrochloric acid (88) has been aided by a cation exchange resin. Other purifications include chemicals, such as formalin (81), methanol (393), hydrocarbons (176), antibiotics (106,139,195,209,254,347,417), alkaloids (361,483), organic acids (202), lactose (265, 486-438), wine (169,819,849,362,863), milk (87,154,155), glycerol (411, 466), and greases and fats (379).…”