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June 2020


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Matthew Poch <[log in to unmask]>
Reply To:
The Pharmaceutical Microbiology Forum Email List <[log in to unmask]>
Mon, 22 Jun 2020 15:55:55 +0000
text/plain (51 lines)
I have been trying to add the below post into the list and got a return message saying that it has already been posted.  I have been searching the post and have not seen it added .  can you please confirm that it actually got added and if not, could we please add this.  Thank you for your help.

Matthew Poch
Quality Control Sr. Manager
Alnylam Pharmaceuticals
    20 Commerce Way
    Norton, MA 02766
    Cell: 508-309-0700
    Work: 617-575-7588

From: Matthew Poch
Sent: Tuesday, June 16, 2020 9:22 AM
To: [log in to unmask]
Subject: Low pressure/Low flow compressed gas sampling

To all,
                I would like to know how others have handled the qualification of compressed gas systems where the point of use are typically <5 psi with flow rates <25 LPM.  Specifically testing for viable air and total particulates. Traditional agar impaction techniques require a slightly higher flow rate to ensure proper impaction into the agar and total particulate devices, which use a gas diffuser tend to pull room air into the unit if flow rate too low.  I'm potentially looking into using liquid impingement bottles (would love to know if there is a good SOP out there) for the viable air, and then considering using a 100L gas samplinmg bag to collected the compressed gas for the total particulate monitoring. Would greatly appreciate others insight into this. Thanks you.

Matthew Poch
Quality Control Sr. Manager
Alnylam Pharmaceuticals
    20 Commerce Way
    Norton, MA 02766
    Cell: 508-309-0700
    Work: 617-575-7588

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