I'm not convinced the negative ions have any effects. Theoretically,
they make dust particle charged so they stick to surfaces by static
electricity, thus clearing the air. But when they give up their charge,
they go back to the air.
A HEPA filter is the best option. Be certain the model you purchase has
the capability of clearing the room. The model should indicate how many
cubic feet of air it can handle. Then she must keep the doors and
windows closed as much as possible to prevent the entry of more
particles.
John
John Messmer, M.D., Assistant Professor of Family & Community Medicine
Penn State Hershey Medical Center
-----Original Message-----
From: leskayc@a... [mailto:]
Sent: Sunday, July 22, 2001 4:40 PM
To: vocalist-temporary@yahoogroups.com
Subject: [vocalist] MED: Air Purifiers
Dear List,
Somehow I think this may have been covered before, but since I can't
remember
the outcome of the discussion please bear with me......My daughter
leaves in
3 weeks to go to college. The freshman dorm is a documented "sick"
building-very poor ventilation, and is carpeted. You walk in and smell
the
mold and mildew. She, of course, is a soprano with horrible allergies,
so I
can imagine she will be sick for the next year. I am looking into
buying
some type of air purifier for her room,
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