»
Diphtheria and Tetanus Toxoids Adsorbed conforms to the regulations of the FDA concerning biologics (see
Biologics 1041). It is a sterile suspension prepared by mixing suitable quantities of plain or adsorbed diphtheria toxoid and plain or adsorbed tetanus toxoid, and an aluminum adsorbing agent if plain toxoids are used. The antigenicity or potency and the proportions of the toxoids are such as to provide an immunizing dose of each toxoid in the total dosage prescribed in the labeling, and each component meets the requirements for those products. It contains not more than 0.02 percent of residual free formaldehyde.