Clean Room Hepa Filter Specification

The hepa filters for stringent cleanrooms are normally located at the terminal end and in most cases provide 100 ceiling coverage.

Clean room hepa filter specification.

Hepa and ulpa cleanroom filtration. Filters meeting the hepa standard must satisfy certain levels of efficiency. Hepa filters can also be grouped or concentrated over your cleanroom to provide a special clean zone. High efficiency particulate air hepa also known as high efficiency particulate absorbing and high efficiency particulate arrestance is an efficiency standard of air filter.

Typically medical use hepa filtration systems also incorporate high energy ultra violet light units to kill off the live bacteria and viruses trapped by the filter media. Common standards require that a hepa air filter must remove from the air that passes through at least 99 95 european standard or 99 97. This process allows clean filtered air to continuously flows from clean to less clean spaces allowing for continual air movement. We offer very high quality products which meet the doe united states department of energy standard.

The standard high efficiency particulate air hepa filter will filter the air down to 0 3 microns at an efficiency or 99 975. In reality however you can reach an iso 6 clean room with 1 recommendation is 2 airlock. Contact us for more information regarding clean room classifications requirements and iso 14644 1 cleanroom standards or call us at 888 984 8801 with any questions that you may have. P airtech is one of the leading sellers of hepa filter.

The fibres are typically composed of fiberglass and possess diameters between 0 5 and 2 0 micrometer. The filtration system is the heart of a cleanroom. A typical hepa filter is a nominal 2 x 4 lay in type 99 99 efficient 0 3 micron particle size hermetically sealed ducted aluminum terminal units. The use of high efficiency particulate air hepa filters having filtration efficiency of 99 97 down to 0 3 microns is another distinguishing feature of cleanrooms.

In theory for an entire room to reach iso 6 air cleanliness you need to enter the cleanroom via an iso 8 ante room then go through an iso 7 to finally get into the iso 6 as shown in the image. All of the air delivered to a cleanroom passes through hepa filters and in some cases where stringent cleanliness performance is necessary ultra low particulate air ulpa filters are used. The use of high efficiency filters. In situ aerosol filter testing is a black art to many but the new isoen14644 3 test methods standard incorporates two in situ test methods that are discussed here by neil stephenson of dop solutions.

Hepa filters are composed of a mat of randomly arranged fibres. The common assumption that a hepa filter acts like a sieve where. Integrity testing of hepa filters.