Comments on: Positive Pressure Versus Negative Pressure in Cleanrooms http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/ A blog dedicated to particle counters with information about particle counter technology, applications, cleanrooms and related topics. Sat, 24 Apr 2010 12:03:08 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: Alessandro Rapp http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/comment-page-1/#comment-6478 Alessandro Rapp Fri, 29 Feb 2008 11:19:46 +0000 http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/#comment-6478 I would like to know which is the minimum differential pressure value between ISO 8 and external environment. I would like to know which is the minimum differential pressure value between ISO 8 and external environment.

]]> By: srikanth http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/comment-page-1/#comment-4308 srikanth Fri, 05 Oct 2007 15:57:46 +0000 http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/#comment-4308 what should be the differential pressure between two different classified area (for example between ISO7 and ISO8 )and same classified ares (for example between ISO7 and ISO7).please ans this question as soon as possible. what should be the differential pressure between two different classified area (for example between ISO7 and ISO8 )and same classified ares (for example between ISO7 and ISO7).please ans this question as soon as possible.

]]> By: farzan alen http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/comment-page-1/#comment-3562 farzan alen Tue, 21 Aug 2007 14:19:52 +0000 http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/#comment-3562 I want to know about differential pressure between two same classes with different cleanness . please reply me. with best regard farzan alen I want to know about differential pressure between two same classes with different cleanness . please reply me.

with best regard
farzan alen

]]> By: jessica http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/comment-page-1/#comment-3110 jessica Mon, 23 Jul 2007 13:17:52 +0000 http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/#comment-3110 i see them to and i thought i was crazy....haha someone else sees it too only on like a white surface or large surface of one color though i see them to and i thought i was crazy….haha someone else sees it too only on like a white surface or large surface of one color though

]]> By: Michele http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/comment-page-1/#comment-250 Michele Thu, 09 Nov 2006 19:45:59 +0000 http://www.particlecounters.org/blog/positive-pressure-versus-negative-pressure-in-cleanrooms/#comment-250 sorry if this question is mis-directed.... are particles of light visible to the naked eye? i'm sure i see particles of light bouncing around in the air around light or white objects. thank you for your time. sorry if this question is mis-directed…. are particles of light visible to the naked eye? i’m sure i see particles of light bouncing around in the air around light or white objects. thank you for your time.

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