Marcos de Alencastro Curado Filho very cool. Nice to have a other fellow Brazilian here

Yes that is super helpful! Sounds like I was on the right track ... I also started bagging my plates that go in the incubator and fridge after hearing you guys talk about it in your video. Basically, whenever it is not in front of the flow hood, it is sealed in a bag.Thanks again for taking the time to write such a thorough answer. I'm sure it'll be useful to others too.

Você não é o único! Where in Brazil are you? I'm from Curitiba, but now I'm working at a farm in California growing wood species.

I would be delighted by that! I'm sure it would be super valuable to a lot of us...  I imagine we all have blinds spots in our technique that aren't a problem until they are, that time and experience teaches. If someone could help us spot them and nip 'em in the bud, that could avert some huge headaches.