Quote:
Originally Posted by MaadDaawg
OMG 
An old friend of mine is a VP at Airgas in Calif, he called on my behalf and they'll give me the 160 litres of LN2 for $62.50, which is a lot cheaper than they quoted me before I got the "friends and family" discount  So rental of 45/mo and deliver of 25 bucks gets to over $100 - so it'll only be worth it if one refill lasts several months.. which prolly won't be the case  |
Those big dewars are pressurized (because they haev a withdrawal system) and have a HUGE static loss compared to a lidded container. If you didnt use the 160L at all it would last ~10 days maybe a little longer. Probably no more than 2 weeks though. On the other hand a dewar like my taylor wharton with a foam lid has held 10 Liters for almost 2 months
