Nitrogen Purity in Packaging?

You'll need to contact the FDA. www.fda.gov

for food standards USDA and 3A may also have something to do about that also.

just remember when working with multiple government agencies.....their standards can conflict with each other........come to think, even in a single agency like USDA-3A its own standards can conflict with its own....and is left to the inspectors interpedation....so be good to the inspectors.

p911

Go here:

http://www.us.lindegas.com/international/web/lg/us/likelgus30.nsf/docbyalias/nav_industry_pharm_usp

It will depend on the application. For example if the product is pro-ported to be sterile, for babies or for those with imparted immune systems etc then the requirements will be different when compared to say bag of chips (or whatever food item).

You have to be careful to specify what process you are undertaking. Broadly speaking, it makes a difference whether it is a pharmaceutical process (http://www.us.lindegas.com/international/web/lg/us/likelgus30.nsf/docbyalias/nav_industry_pharm_usp) or a food process (http://www.linde-gas.ae/international/web/lg/com/likelgcom30.nsf/docbyalias/nav_biogon) or a general industrial process. As a matter of curiosity with regard to different standards for different purposes, medical oxygen is not as pure an oxygen as some industrial oxygen, but nevertheless industrial oxygen is not to be used for medical purposes.