Maybe do a little Chronic style grow in a quart with a cake or something small and self-contained. I find prints from invitro grows to be very clean.
I mean, you can take one print, inject that into a pint or quart of water, and you have dozens of syringes right there.
Like Cat and DD said, a print is almost never even close to sterile. It's just clean that you are shooting for.
Yep yep yep. In "Growing Gourmet and Medicinal Mushrooms" (Stamets, p. 134), Paul talks about making "spore-mass masters".
Basically, just what you said MLBjammer. Fruit invitro on sterilized wood chips (for the example in the book) and aseptically removed, then sloshed around in a jar of sterilized H2O.
That would make spore syringes.
Or, just remove a nice looking fruit (or whatever you can get ahold of!) and remove (carefully) with sterilized tongs, tweezers, fork, spoon, wtf ever (in front of a laminar flowhood, in a glovebox, still-air box, etc). And then print.
Personally, I've not tried it yet, but sounds like it would be great for when you need absolutely clean, viable spores.
I use agar so I'm not real anal about how "clean" my prints are.
I can always transfer away from any Contams.
With that said, when I do print, I lay a big piece of aluminum foil down in front of the flowhood and place caps to be printed on that.
I got a bunch of Petri dishes, that once arrived, had a cpl holes in the plastic sleeves, I won't use them for culturing, but I will wipe them with isopropyl alcohol, let them dry in front of flowhood, then place one half of a Petri dish over each cap.
This keeps the humidity a little higher which helps the caps drop their spores.
After they drop their spores, I cut each print out of the foil and place into a sanitized (not sterile!) Petri dish, wrap with parafilm and store in the fridge.
Probably overkill, but whatever, I get bored. :-)