The PDA Journal has a great article about particle contaminants. You have to pay or be a member to see the article, but you can read through the references and gain a good deal of knowledge on particle contaminants. You might be able to find a PDF of the article I believe it is the May 2013 edition.I was going to ask where he got his information from, but I (we) know its bullshit. I'm wondering if he's even American when he said they found them in ampoules.
Code:
https://journal.pda.org/content/67/3/186