be measured by sample standard deviation sample range or known standard deviation the present revision is known as asq ansi z1 9 1993 corresponds directly to the military standard mil std 414 that spec is based on the following inputs for lot sizes between 10 000 and 35 000 the sample size is n 100 for lot sizes between 35 001 and 150 000 the sample size will be n 150 for lot sizes between 150 001 and 500 000 the sample size will be n 200 to use the controlled dosage iontophoresing device solution containing cation to be delivered is injected into the inlet port of the cationic drug chamber and solution containing anion material is injected into the inlet port of the anionic drug chamber the patch is then applied to the portion of the body where drug is to be administered and adhered to the skin by an adhesive layer on the bottom of the patch and or by an overlaying bandage material once contacted with skin an electrical circuit is completed which allows passage of current and delivery of drug compounds fig4 schematically illustrates the flow of electrons and ions during use of this invention fig5 shows electrochemical half reactions which can serve as means to provide stimulation current in this invention when either the oxidizable material of the cationic chamber electrode is depleted or the reducible material of the anionic drug chamber electrode is depleted current flow falls to essentially zero and the delivery of drug compound is completed fig6 illustrates the fixed delivery of current as.