I’m presenting the needs of filtration in OR and ICU for our customers. They don’t have any SINGLE filtration unit or system in those rooms!!

I did particle counting for them and trying to show that the particle count numbers are very high.

However, I need some standard supporting this, otherwise my numbers are useless.

So, is there any standard relating level of particle counted in hospital, i.e, OR, ICU ?
(I do know there are some standards about air change rate but not the number of counted)

Thanks in advance.

If I was the one being operated on in the OR I would want to have a laminar flow cleanroom area Class 1/ISO Class 3. I would want all air HEPA filtered and I would also want to UV treatment of all airflow.

Unforunately most of the OR rooms I have seen have an air handling unit which has limited filtration and if your lucky has HEPA filters in the unit. I have seen some with UV Treatment of the air, but on a very limited basis.

So particles counts are in the 100Ks up to the Millions. This is why most OR areas pre-treat the patient with antibiotics, just so people can survive the surgery.

We would be glad to review your particle counts and provide recommendations at designbuild@digitalaircontrol.com