PT - JOURNAL ARTICLE AU - Neil R. Anderson AU - Wendy A. Preston TI - Effect of Ultrasound on the Permeability of Silicone Rubber Membranes DP - 1983 Nov 01 TA - PDA Journal of Pharmaceutical Science and Technology PG - 206--209 VI - 37 IP - 6 4099 - http://journal.pda.org/content/37/6/206.short 4100 - http://journal.pda.org/content/37/6/206.full SO - PDA J Pharm Sci Technol1983 Nov 01; 37 AB - The diffusion of methylparaben through silicone rubber membranes was followed with and without ultrasound. Ultrasound sources (5 MHz and 2.25 MHz) were used to irradiate the membranes normal to the membranes and in the same direction as diffusion flow. The data presented shows no apparent effect of ultrasound on silicone membrane permeability.