personal air filters

Re: personal air filters

John K Jordan

Thats a new one for me. Could it be a typo?

HESPA

Doug Wolf

HESPA stands for High Efficiency Synthetic Particulate Airfilter.

Re: HESPA

John K Jordan

Interesting. With that definition I found some information, but didn't see that acronym in use anywhere else.

I found a technical paper "Fiberglass Vis. Synthetic Air Filtration Media" which describes and has some cautions about synthetic filter media, e.g. a statement that "lifetime tests reveal that ... [fiber]glass media maintains its efficiency, while synthetic media loses it's efficiency over its service life." (I didn't have time this morning to read the whole thing; have to go feed the livestock.) This also might be outdated.

I couldn't get the link to work here but it showed up with a google search on your text.

Re: HESPA

David Walser

I found a technical paper "Fiberglass Vis. Synthetic Air Filtration Media" which describes and has some cautions about synthetic filter media, e.g. a statement that "lifetime tests reveal that ... [fiber]glass media maintains its efficiency, while synthetic media loses it's efficiency over its service life." ...

Is fiberglass a natural, as opposed to a synthetic, material? Those words must not have the meanings I thought they did. It reminds me of a string of beads I once saw in a jewelry store. The beads looked like pearls and the label proclaimed: Genuine Lucite! I hate fake pearls made from fake Lucite, don't you?