Quote Originally Posted by polyglot View Post
Do not open them! They are packed under nitrogen in the factory and far better sealed and protected from oxygen than you can manage at home. Glass, marbles, butane and all that bullshit is useful only once you have opened containers..
A glass container would be diffusion-tight in contrast to an original plastic container.
It is possible (though a hassle) to refill chemistry from one container to another without losing a nitrogen topping.