24 Jan 2016
A number of recent articles have left us all rather confused about the HEPA vs ULPA filter debate.
Our Clean Air specialist Matt is on hand to set the record straight. And it turns out it’s not so complicated after all!
As we know, biological safety cabinets are special! They are safety devices with the primary purpose of protecting the user from harmful particles and due to the seriousness of their job, they are controlled and must conform to regional standards.
In EUROPE biological safety cabinets must conform to EN12469.
The filters used in biological safety cabinets in EUROPE must confirm to the EN1822 standard.
In North America biological safety cabinets must confirm to the NSF 49 standard and the filters used must conform to the IEST-RP-CC001.3 standard.
In Europe we refer to A High Efficiency Particulate Air (HEPA) filter H14 with 99.995% efficiency at the most penetrating particle size (0.3 micron). This is also the filtration level talked about in accordance with the US standard NSF 49.
It’s the age old tomato… tomato debate! We’re talking about the same thing after all!
U15 ULPA filters are a rarity due to cost and increased resistance – hence increased noise. But they do offer 99.9995% filtration efficiency at the most penetrating particle size.
If you are interested to discuss further please do give us a call!
Tel: +44 (0) 1706 228416
Posted by envair_pro