23 May

Gowning Benches

So obviously your curiosity got the better of you’re reading this blog.  You’re probably thinking to yourself, Gowning Benches?  I had a contractor call me this week asking a whole bunch of questions.  So after doing a crash course, I now know what a gowning bench is made from and used for.

 

 

 

 

Construction is typically 16-gauge, Type 304  stainless steel for corrosion-resistance and to provide sturdy support for workers dressing for the cleanroom environments.   The finishes of the bench vary but the average dimensions are  (12″) wide; bench and (18″) high with a rolled rim front and back for worker comfort during changing.    Benches can also be adapted for more secure floor mounting or where space is an issue,

there are wall mounted, pull down models, like the one pictured on the left.  There are several lengths and widths to choose from, but the common denominator is that all of the above benches that I reviewed strive to meet cleanroom standards.

 

 

So you ask, what are cleanroom standards?  Before global cleanroom classifications and standards were adopted by the International Standards Organization (ISO), the U.S. General Service Administration’s standards (known as FS209E) were applied virtually worldwide. However, as the need for international standards grew, the ISO established a technical committee and several working groups to delineate its own set of standards.

FS209E contains six classes, while the ISO 14644-1 classification system adds two cleaner standards and one dirtier standard.  The “cleanest” cleanroom in FS209E is referred to as Class 1; the “dirtiest” cleanroom is a class 100,000.  ISO cleanroom classifications are rated according to how much particulate of specific sizes exist per cubic meter.  The cleanest cleanroom is a class 1 and the “dirtiest” a class 9. ISO class 3 is approximately equal to FS209E class 1, while ISO class 8 approximately equals FS209E class 100,000.

By law, Federal Standard 209E can be superseded by new international standards.  It is expected that 209E will be used in some industries over the next five years, but that eventually it will be replaced internationally by ISO 14644-1.

As always, our knowledgeable laboratory sales staff here at OpticsPlanet are always available to answer any questions that you have.  I do encourage feedback and any suggestions that you may wish to offer.  Knowledge is Power!

Stephen Gonshorek