will my sn degrade if I quickly open the package then close it?

[sportsguy56]

I need to open my package of nitrite for the blood test, then quickly close it. i'm worried that when i open it, it will degrade to nitrate. is this possible? also my sn came in a plastic package that has a seal like a zip lock bag, instead of a bottle. will I be able to seal it up completely so that it isn't exposed to air?

 

[Judy Garland]

No, as long as you keep it sealed it should be fine. SN degrades slowly (it takes years). If it has some clumps or is cakey that is normal. You're fine.