I'm working my way through a SLAM; my CYA is 60, so I'm using a lot of R-0871 drops to do the FC tests. I came across a thread the other day saying that I shouldn't squeeze the bottle when dispensing drops. I think I was doing that too much to hurry the process, so my FC readings were initially indicating high (meaning my actual FC was too low). Is there a standard volume of a drop? Since I need 48 drops for a FC of 24, is there a number of mL I could measure to use instead of drops? Finally,, my bottle is about empty, once it is empty, could I refill it with water and experiment with that? Would a drop of water be the same size as a drop of R-0871?