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...
The number of requests we get for replacemnt "2x4" clean room filters is astounding and it seems that this very common request would be easy to answer - but clean room HEPA filters are not quite that easy. Some additional information is key to be...
Cottonwood seeds are known to travel up to 5 miles and each cottonwood tree sheds their seeds for two weeks. Those of us living in the Midwest United States can count on anywhere from one to three months of seeing cottonwood seeds flying around, though...
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...
If you look up at the ceiling of a cleanroom, operating room, anteroom, or pharmacy you will likely see a diffuser with a HEPA filter in it. These rooms require high purity air filters and the most reliable way of delivering that to a...
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. ...
It used to be if you wanted a side access HVAC air filter housing, you needed to know what style of filters you wanted to use, and then you were locked into that style as long as the equipment was in service. With new filter...
ASHRAE 170 provides an outline for Hospital and Healthcare Facility Ventilaiton and Filtraiton, and is the basis for CMS, FGI, and Joint Commission standards. This article is not a substitue for the actual standard, what will provide you with the "highlights" of ASHRAE 170 as it pertains...