You can order the prepared petri dishes thru
Nasco Scientifics. Tell them the intended use and they should be able to
instruct you on which petri dish to buy. ( I'd recommend TSA (tryptic soy agar)
plates. They are out of Fort Atkinson, Wisconsin and the phone # is
414-563-2446. If your son intends to grow common household organisms and normal
flora of the mouth, ears etc., there is still the
possibility of pathogenic (disease causing)
bacteria from a person who is a carrier, so I'd recommend using the covers
that come with the dishes. Overall, it's a fun and educational
experiment. Good luck!
Stephanie isoinfo at neo.lrun.com.
