Ok, I just ordered 1110mls of 100mg 100%VG base from WL. It's coming in 6 bottles, 3 250's and 3 120's. I've read that I need to test the nic level before I start mixing with it to be sure what I have, so I also ordered a test kit. My intent is to combine all 6 bottles down I into one half gallon jug before I test, that way I only have to use one test instead of testing each bottle individually. My question is this, after I combine the bottles, do I need to let the base "steep" for a while before I test it to give all the levels time to balance out or whatever, or can I test it immediately? I just want to make sure when I do finally test it that I get an accurate reading. Thanks everyone!