13MM VIAL STOPPERS
Low cost 13mm vial stoppers for serum vials. For serum vials with a 7mm hole opening and 13mm outer rim diameter. This size is normally associated with 2mL and 3mL vials (some larger vials on this site also have a 13mm crimp finish).
30MM VIAL STOPPERS
30mm vial stoppers for our 250mL and 500mL serum bottles. For serum vials and serum bottles with a 15mm hole opening and 30mm outer rim diameter.