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Cleanrooms vary in just how clean they need to be, and what is meant by clean.  Typically Cleanrooms in the United States are designed by using US FED STD 209E (which has long been discontinued but still referenced) and ISO 14644-1.  There is no set...

Cleaning Chillers becomes a common chore in areas with a lot of cottonwood trees, swamps with cattails, and near other high debris generating foliage.  In some cases the problem can be so bad that chiller cleaning may be needed every two weeks during peak cottonwood...

Ceiling HEPA Filter FAQs Used most commonly in cleanrooms, operating rooms, anterooms, and pharmacies ceiling HEPA filters come in many different styles.  This style of "cleanroom filters" are the most common and safest type of HEPA filter for operating rooms.  Across all of the options and...

Camfil HEPA filters that are for use in HVAC systems (as opposed to cleanroom/ceiling units) are the Absolute series with efficiecies starting at 99.97% at 0.3 micron.  There are a few things that make Camfil's Absolute HEPA filters different from any others.   The manufacturing process for Absolute...

When trying to answer the question of what is best there should be a list of disclaimers, because nothing is 100% best 100% of the time.  For this question, we are addressing commercial HVAC applications for non-critical facilities like schools, office buildings, warehouses, restaurants, shopping centers, etc. ...