Phil jorge2 at earthlink.net
Fri Dec 5 22:19:38 EST 1997

Enigl wrote:
> <<
> Can anyone tell me what irgasan is and what it is used for in
> PIA(Pseudomonas Isolation Agar)?? >>
> It is an antimicrobial that kills mostly gram positive bacteria (so it will not
> kill _Pseudomonas_ very well if at all).  It is used to stop gram positives
> from over running _Pseudomonas_.   It is also used extensively (DP-300 or
> DP-3000 I forgot the trade name)  to kill (primarily) _Staph. aureus_ on the
> hands.  I have designed several products using it, you may have seen some of my
> products.  In the market it is used as a medical office hand scrub made for/by
> various different companies.   I wrote part of a book about how to reduce the
> use of this product and still get the kill (see 2. below).
> --------------------------------------------------------------------------
> ------------------------------
> Davin C. Enigl,  Microbiology Consultant,
> MEAS-Master of Environmental Arts and Sciences.
> 1.  Discovered heat resistance in mold: _Talaromyces trachyspermus_ (Published
> w/USDA)
> 2.  Co-author (with Kent M. Sorrells), Water Activity and Self-Preserving
> Formulas,
> In:  _Preservative-Free and Self-Preserving Cosmetics and Drugs_, Kabara and
> Orth, editors.  Copyright 1997,
> Marcel-Dekker, ISBN 0-8247-9366-8, Telephone: 1-800-228-1160
> 3.  Water System Design and Validation for FDA regulations
> 4.  Preservative Formulation and Stability Testing
> 5.  FDA Validation Protocols: aseptic, sterilization, laboratory methods
> 6.  Hazard Analysis and Critical Control Points (HACCP)
> 7.  Current Good Manufacturing Practices (cGMP)  Audits
> Web Site:  http://members.aol.com/enigl/
> December 3, 1997
> 9:22 pm PACIFIC

Davin's correct.  The label name incosemtics/OTC drugs is "Triclosan" 
I'd also suggest carefully consider using PIA.  Some pseudomonads can be
sensitive (e.g. some of the cepacia's) and some of the enterics it is
claimed to inhibit are resistant.

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