MACHEREY-NAGEL glass vials are made from 1st hydrolytic class glass. Wide opening; vials to be sealed with our screw closures N 9, bonded or assembled. Different inserts for wide opening available. Due to the cap design universally usable on almost all auto samplers in GC and HPLC. Screw neck vials N 9 are available in broad variety, incl. vials with/without label + scale, in clear or amber glass (salinized versions also available) as well as plastic vials. Specialty vials, like those with integrated glass insert, are also included. Supplied in PP boxes with 100 vials each.