Q. Do any of the lyophilization stoppers that WHEATON sells contain natural rubber latex?
A. Only those stoppers made from chlorobutyl-isoprene blend contain natural rubber latex. All of the other lyophilization stoppers are latex-free.

Q. What size vial should I use to lyophilize 5mL of product?
A. When freezing product in glass, the container should not be filled more than half full. If you want to lyophilize 5mL of product, you should select a vial that holds at least 10mL.