The black/green Scotchbrite pads contain an abrasive which
might be friable. I am not sure about the white, but they
probably contain something as well. Just something I worry
about when using non filter materials as filters.
I find that the easiest source of the exact material is in
the passive "electrostatic" air filters sold at Home Depot,
etc. They cost about $20 for the large adjustable size, and
you get enough of the material to do many scopes and instruments.
You really have to be careful not to get a filter material
that resists the air flow too greatly.
-Chuck Harris
Charles P. Steinmetz wrote:
Paul wrote:
Speaking of filters.
* * *
many if not all of the filter material is degenerated.
Its soft and sticky. At a min get rid of it.
My environments clean so I leave them out.
Have never found a replacement. Maybe some home depot air filter.
The HP 5345A manual specifically directs one to remove the filters.
The coarser grades of "ScotchBrite" pads make good air filters, if one
determines there is a need and is willing to check them once in a while.
The coarser ones I have are decades old and white. Some grades are
available at grocery stores as pot-and-pan scrubbers.
Best regards,
Charles
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