First question is about the raw powder I read the other post and couldn’t get a good reply. Do I need to pre sterilize my raws or does the filter and the ba do that. If I do need to sterilize the raws what’s your method? Second question after I clean my beakers and put them in the oven do I need to cover the tops with foil or no. I’ve read a lot on here but I want to confirm these two things. Thanks