Sandra, by "unit" I meant the amount in the spaces marked off by the numbers 1 through 9 (with the fluid left after that as the 10th). I'm not sure if I heard that at the vet's or I just made it up because it went with the numbers. Each unit is 100cc or ml, and the whole thing is 1000ml or 1 liter.

I stopped by the vet's today to exchange a leaky fluid bag for one that didn't leak. I asked the tech who helped me about the problem you mentioned with everything being flushed out and your cat getting a bladder infection from e.coli. She said something like e.coli is everywhere but was quite firm that if I'm doing as the vet advised (which I am), that won't happen. I'm not sure about her. I think I'll ask Dr. Lewis about it.

Pat