Oh and getting this topic back on track? I used to mix 10mls for samples/tests. Now I mix 30ml test batches. You can mix up a recipe using your testers by adding them under the Little Blue Wrench as "Save as Base". In your recipe add them as a flavor (your Bases show as flavor options) and the calculator will figure out all the %s. This helps prevent wasting all those 30ml testers and in the end you can mix up many 30ml bottles of finished juice from just testers.
The best secret is any recipe you have made a 30ml test which you LOVE, or more importantly have a long steep time, should be mixed at 120ml minimum soonest ...example Custards. 30 days later if you still are a fan, mix up a 240ml ...which is 8 bottles of juice! Soon you'll have plenty of fav ADVs. The hardest part has always been discovering something so delicious to vape in that quantity.
Heh Step#1 buy 240 and 120ml empty GLASS bottles with polycone caps