[GFDuke]

I dont think i lost alot of it just sitting there. pretty sure i lost more of it pouring into my thermos than i did through evaporation. i wasted alot just through my learning and i'm pretty sure the dewar wasn't 160l full. The gauge said it was 3/4 full when i got it. I called Airgas and they said that the gauges wern't accurate. But from my estimation there was no way i filled my 2 - 1 liter thermos bottles 160 times in 4 sessions. i wasn't counting though. i just poured and really didn't care. I was pretty careless. I will be better next time. No doubt.