>This sounds like a very good idea, John.  I will give it a try, and 
>change my drop count accordingly.  Where do you get your pipettes? It's 
>about time I became more precise in my measurements.
.
Pasteur pipettes will give you different numbers of drops per  ml depending on
the size of the specified orifice .   I use the twenty drop version. This gives
more accurate measurement than straight pipettes or dropper bottles or syringes.
They are easy to use and cheap.
Terry King