http://www.instructables.com/id/Home...ridgeAir-con-/

This is my quick home made job of a freezer . I didnt know how much gas to put in so i put in about 70grams .

I might have to measure all the pipe work to get an exact amount but how far of the mark am i with 70grams?

whats the calculations i need. its 1/4 pipe .

Yes i know this is not the best designed system . like i said it just quickly put it together for something to do .