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The 'rinsed in hot water' was tap water hot enough that it was almost burning my fingers, for maybe 20 seconds on and off, till the egg was clean. 'Washed in bleach' was the same procedure then a quick 10 second swirl in water the same temp with a dash of bleach in it (not measured precisely) then rinsed off under the hot tap again.
Thanks for the link; I've already read through that entire thread with interest. That was what got me started with my bleaching/rinsing/not doing anything experiment, which is of course being done under highly UNscientific conditions and with several other variables besides the washing thing. I'm also looking at staggered hatches and the effects of extreme fluctuations in humidity, as well as hatchability in eggs stored for over 10 days. I have now set three batches of eggs and the first lot have already hatched successfully. The incubator is filthy now which is why I'm not so confident about the next two lots, but it'll be interesting to see what happens. I won't be assisting chicks to hatch in any way, so they better be tough!