On Mon, 23 Oct 2017 07:22:11 -0700 (PDT), "
wrote:

On Monday, October 23, 2017 at 9:42:45 AM UTC-4, N_Cook wrote:

2 minutes in an ultrasonic bath ,canted over to the yellow side, in
methylated spirits. Both now fine photo-grade output, with refilled carts.

Yes. Ultrasonic cleaners can be very close to magic if properly applied.

Peter Wieck
Melrose Park, PA

The only ultrasonic cleaner I have had experience with is used by my
dentist!

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http://www.npsnn.com