Ok I just want to make sure this is correct. From what i read in the educational thread that 2iu = 11 on an isulin pin. So if i wanted to do 4 iu's a day it would be a total of 22 on the pin. Now i would divide this up into 2 shots. So one vail would last ruffly 5 days. Also i'm doing 5 days on 2 off. Also will it last that long wit hthe sterile water refrigerated or do i need basitrasic water( cant think know how to spell that). Thanks for your help. i jusat wanted to double check everything to make sure i'm doing it right