Hi Randy,
Great question!
The emulsion is thick (rapid fixer takes about 1-2 minutes to clear), and it's hardened in the fixer per my recommendations. The wash times I suggest were numbers I saw in Journals from the late 1800s, so I kept those as conservative numbers.
Additionally, I just haven't tested for washing. That's kind of a key insight into my engineering mindset (and all good engineers, of course). I'll only make improvements or changes that have been verified as acceptable with testing. I have a priority list of improvements to make within available bandwidth, so those come first.
That said, it'd be awesome if someone were able to test for shorter wash times with a proven method and conclusive results. I'd love to know. I just can't get to it myself.
One thing I did do is put "gentle agitation" to rest starting with boxes labeled "Batch 006".
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