As a preparation for germination, basically to zap any virus that might have been on the outside.
Here’s where I started with the ultrasonic:
(there’s some good background info on cavitation)
That ‘gold standard’ turned out to be crap, I now use JohnnyPotSeed’s germination method after the ultrasonic cleaner.
The ultrasonic cleans up the outer surface and the EWC works it’s magic on the beans.
What I have found with Johnny’s method is it will get really weak beans to pop but they generally lag a couple days and those ones will almost always die.
The first bunch to pop are the keepers.
The reason I’m concerned about the outside is information I’ve read indicates that TMV (tobacco mosaic virus) will hitch a ride on the outside but is not inside the shell.
