Quote Originally Posted by PVia View Post
Don...do you use a drop of tween undiluted? and with how much sensitizer (in ml)?
2 drops for 7x17 or 12x20 (4ml and 6ml solution respectively)
1 drop for 8x10, with total drops #1 and #3 and NA2 at 18+18+NA2

You could dilute the tween, or pipette for less than one drop (I typically pipette) if you are using 4x5 or 5x7.