Sterile PS plastic petri dishes (35-90mm, round/square), enzyme-free, pyrogen-free, DNA/RNA-free. (5,000-9,999 pcs), (10,000-49,999), (50,000-99,999), (>=100,000 pcs). The Key-attributes table lists size as "35mm, 60m, 70mm, 90mm" ("60m" is a typo for 60mm on the page)