Wheaton glass serum vials feature a 'blowback' feature in neck and bottom.

These are the choice containers for Lyophilization. There is three majors factors to successful lyophilization: Heat transfer, sealability, and water vapor transmission barrier. A Wheaton glass serum vial, as opposed to glass serum bottles, plastic serum bottles, and other containers has a very consistent thin wall and bottom. This attribute of a Wheaton glass serum vials allow the heating phase of the lyophilization process to take place rapidly and effectively.

Clear serum tubing vials: Manufactured from Wheaton '200' low extractable borosilicate glass tubing to hold uniform wall thickness.

Amber serum tubing vials: Manufactured from Wheaton '320' borosilicate glass (meets ASTM Type I, Class B and USP Type I Standards).

Wheaton glass serum vials feature a 'blowback' feature in neck and bottom. This allows for a two or three legged lyophilization stopper to be securely and evenly seated in the mouth of the vial during the lyophilization process. An uneven stopper may results in water vapor entering back into the vial once stored. Additionally, these serum vials come in standard crimp finish sizes, for compatibility with various standard aluminum seals and crimping tools. Wheaton glass serum vials are made from premium, low extractable, borosilicate glass, which offers a superiorbarrier to water vapors. The vials are available in either clear and amber for UV light transmission applications. These vials can be autoclaved, by dry heat, by chemical, by gas, or by radiation.