To keep a crisp packet fresh you need to store it in a biscuit tin or something similar to that that won't allow oxygen in and turn the crisps stale
Nirogen
Argon is inside Crisp packets
nitrogen is a unreactive gass. It keeps the food inside the packets fresh
crisp packets
crisp packets
lithium
There is nitrogen but not zinc
nitrogen
They are RED
fin metal foil
Yes. unles they are unsalted
I wouldn't think there is a statistic for that.