QSC Tren Ace Long Term Storage

[bigMoJo]

Flapper stoppers are for lyophilized preperations not oils. They are designed to hold the seal due to vacuum

@narta , by "flapper," you are referring to the one's @Ghoul is referring to as "wings," correct?

 

[Ghoul]

@narta , by "flapper," you are referring to the one's @Ghoul is referring to as "wings," correct?

Ahh ok, learn something new every day.

Lyophilization stoppers (left) vs Serum stoppers (right).



I'm surprised serum stoppers can't hold vacuum, but clearly there's a reason for two types.

Still, hate those "flaps", and have seen them on oil vials. Guess it was just what was cheap or available.

Thanks @narta