COMPARISON OF DEY AND ENGLEY (D E) NEUTRALIZING MEDIUM TO LETHEEN MEDIUM AND STANDARD METHODS MEDIUM FOR RECOVERY OF STAPHYLOCOCCUS-AUREUS FROM SANITIZED SURFACES/

The ability of Dey and Engley (D/E) Neutralizing Medium to recover Sta phylococcus aureus ATCC 6538 from tile surfaces exposed to a commercia l phenol (Mikro-Bac) and a quaternary ammonium compound (Mikro-Quat) w as compared to recovery with Letheen Medium. Standard Methods Medium w as used as a control recovery medium. Organisms were exposed to both a ntimicrobials for varying time periods, then were recovered by swab an d Rodac plate on both test media. The recovery by either procedure was significantly higher with Dey and Engley (D/E) Neutralizing Medium th an with Letheen and Standard Methods Medium. The D/E Medium shows prom ise for evaluating antimicrobial chemicals used in environmental sanit ation.