Reason for acquiring pure N2 gas cylinder?

[parkinglot]

I am interested in performing a science experiment that involves the use of pure N2 but I'm not sure which one. What kind of usage should I be using this gas for if asked by a supplier? I don't think I need a very large bottle. 10# perhaps?

 

[[HNO]]

welding or beer brewing
10L is ok

 

[jodes2]

welding or beer brewing
10L is ok

I didn't think nitrogen is used in welding??

 

[[HNO]]

I didn't think nitrogen is used in welding??

if memory serves it's used for copper wielding

 

[Euthanza]

To freeze foods, make ice cream, cooking and baking