and,the reason ive never heard of "lab grade" is cause theres no difference,other than it being NOT purified for human use and refined for lab conditions,expensivly i add..so suck down a germy tank of 99% pure lab grade..ill taste my sweet sweet medi..this thread was for readers not lucky enuf to be able to obtain real medi..diy instead.
Types of Nitrous And Filling A Tank
Scientific Grade Nitrous
Scientific grade (AA) nitrous is 99.9% pure. It is used for chemical reactions where there can be no contamination from oxygen or nitrogen such as spectrophotometry.
Medical Grade Nitrous
Medical grade nitrous is 99.0% pure. It is obtained from chemical supply houses and gas companies. It has been purified for human use.
Food Grade Nitrous
Food grade nitrous is found in whippits and catering supply tanks