Sandy,
I've not worked with the APHS (yet) but know that some films, techpan being
the most notorious, can develop pin holes if an acidic stop bath is used.
With tech pan one just uses water to stop the development; it works fine
since the deveopers used are always compensating (ie weak) and stop fairly
handily with water alone. I wonder whether APHS also dislikes stop bath and
whether you might want to try water instead.
Bill
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WILLIAM LAVEN PHOTOGRAPHY
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