Well they don't sell them as demagnetized items per se.
You'd be buying a small plastic battery powered hand held vac (preferably with enough suction) and any metal parts on that would have to be demagnetized by you first if you want to use it safely on all your gear.
Some very fine dust is magnetic (some of it being debris from outer space) and when it gets into electrical equipment and clings to smaller electronic parts, then you can get problems.
On Sun, Oct 19, 2014 at 3:48 PM, Mark Pring markpringnz@yahoo.com [newmellotrongroup] <newmellotrongroup@yahoogroups.com> wrote:Hi ChrisI haven't come across a small demagnetised vacuum cleaner, can you suggest any? I don't want to spray any chemicals on my synthesizers or mixer.MarkFrom: "Chris Dale unobtainiumkeys@gmail.com [newmellotrongroup]" <newmellotrongroup@yahoogroups.com>
To: newmellotrongroup@yahoogroups.com
Sent: Monday, 20 October 2014 1:52 AM
Subject: Re: [newmellotrongroup] Off topic dust
Actually it's better to use a small demagnetized vacuum unit than to spray anything on electronic parts.The chemicals build up over time and cause equipment to depreciate faster.On Sun, Oct 19, 2014 at 7:08 AM, tron400@yahoo.com [newmellotrongroup] <newmellotrongroup@yahoogroups.com> wrote:Maybe it would be worthwhile to invest in a small air compressor rather than buying cans of compressed air year after year.
Bernie