RT Journal Article
SR Electronic
T1 A Method for Evaluating the Effectiveness of Preservative Systems in Water-Immiscible Ointments
JF PDA Journal of Pharmaceutical Science and Technology
JO PDA J Pharm Sci Technol
FD Parenteral Drug Association (PDA)
SP 216
OP 221
VO 36
IS 5
A1 Robert L. Abshire
A1 Barry A. Schlech
YR 1982
UL http://journal.pda.org/content/36/5/216.abstract
AB A procedure designed specifically for determining the effectiveness of antimicrobial preservatives in an ophthalmic ointment was evaluated. Except for Staphylococcus aureus, the United States Pharmacopeia XX battery of challenge microorganisms worked well in the system. The results indicate that this procedure can be used to challenge preserved ointments and determine if such preparations meet the same test requirements as those set forth in the compendium for preserved solutions and suspensions. It is proposed that other laboratories study this method so that its usefulness for evaluating the effectiveness of preservatives in ointments can be defined.