Thanks for the response... This weekend will be the trail run..Airgas will rent you a dewar with a 500 dollar deposit so assuming we dont break the thing whilst extracting all should be well. I believe their quote for Liquid N2 was $10 a liter.

I will make a post on Sat after we hopefully yield some very pure cannabinoids. Previously using lab grade hexanes to extract and distilling to recover hexanes works quit well and the product is great, but waxes and chlorophylls are still carried through to the final product regardless of sep funnel washes.