No vacuum seal in vial

[Juniper]

Anyone ever have a vial with no vacuum seal? Something to be concerned about or just a nuisance?

 

[AndyPanda]

Happens all the time. A nice vacuum seal is a sign of better quality assurance, but I don’t think has much of an impact on the peptides.

 

[peptideusername]

Every vendor I've ever used has had some vials without a vacuum. It'll be alright.