Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!asuvax!hrc!hw-4h625!nogeea
From: nogeea@hw-4h625.UUCP (Allen Nogee)
Newsgroups: sci.electronics
Subject: Re: Need help with part number--Ultrasonic Humidifier
Summary: proper ultrasonic care
Message-ID: <481d3264.1205f@hw-4h625.UUCP>
Date: 18 Jan 90 20:16:55 GMT
References: <1990Jan17.191432.5620@gpu.utcs.utoronto.ca> <78762@psuecl.bitnet>
Organization: gte
Lines: 22

In article <78762@psuecl.bitnet>, peg@psuecl.bitnet (PAUL E. GANTER) writes:

> Maybe you should forget fixing this (if it is your decision).
> Apparently, there is controversy over the safety of ultrasonic
> humidifiers.  Unlike other types, they apparently put large
> amounts of particulates into the air (mold spores, pollen, minerals,
> bacteria).  I heard (maybe a rumor) that the FDA has even considered
> recalling them.
> 
> I thought they were mighty neat devices, but mine is now packed away...
> 

You shouldn't have any problems if you follow the directions:
1) Change the water every day.
2) Clean all parts that touch the water with a bleach/water mixture once a 
   week.
3) Use only low mineral water.

I use high mineral water that has gone through a reverse-osmosis water filter
in mine.  I've never had any white dust.  Proper care and water should 
eliminate mold, bacteria and minerals.  As for pollen, just keep the flowers
out of the water container and that shouldn't be a problem.