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Trusted Contributor
Posts: 214
Registered: ‎02-18-2010

How do you properly measure a pressure gradient?

A client I am working asked a question about properly measuring a pressure gradient. There are two gauges. One gauge is in the ante room and the other is in the pharmacy. Does the one in the ante room need to be higher than the one in the pharmacy?

 

Currently the one in the ante room measures about 0.03 and the one in the pharmacy is 0.01.  Does this pass or should the one in the pharmacy be at least 0.02? If the one in the pharmacy is 0.02, does the one in the ante room need to be 0.04?

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Expert
Posts: 1,167
Registered: ‎02-23-2010
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Re: How do you properly measure a pressure gradient?

Heather,

 

Since a picture or two is worth a thousand words, I thought that I would send you a pressure differential schematic illustrating the desired pressure relationship in both a non-hazardous and hazardous sterile compounding suite.  Let me know if you have other questions about the drawings.  Is the pressure between the buffer area and ante area 0.03" and from the ante-area to the pharmacy is 0.01"?   Thanks.

Eric S. Kastango, MBA, RPh, FASHP

It's all about the patient.
Trusted Contributor
Posts: 214
Registered: ‎02-18-2010
0

Re: How do you properly measure a pressure gradient?

Eric - My client will especially appreciate the diagram. Thank you kindly!

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