ive counted, but in small intervals, but yea i was going to guess 60 to 80. but i really would like to know if theres any actual number out there. i have a small glass extractor that fits 3.5 grams. i have a couple of ounces of material and i wanted to stick to the 1 can per ounce rule. so i want to take however long it runs for and divide it by 8 so i can do small precise runs. its a huge pain in the ass and its quite time consuming but its all i have right now and i am quite consistent with what i have.
your getting 20oz cans of vector? normally i find them in 320ml which is in the 10-11oz range... those take about a minute - a 20oz would probably take 100-120 secs...