Bladder filling question.

Hi.

For those who have attempted to safely fill bladder with sterile fluid (preferably saline) via catheter, what was the most you've managed to get in before giving up or leaking ?

I've noticed that going really slowly, stopping to give bladder time to adjust as it's being stretched, really helps out, but obviously there are limits for everyone.

I initially could do about 600mL before it became too intense, or before my bladder just spasmed and forced saline out around catheter.

With some slow steady attempts, I've eventually managed to get 850mL in, but that felt really intense and I could hold it for more than few seconds.

Obviously, any pain, other than the feeling of stretching, is an immediate red flag and the end of the session.

I'm guessing most people here don't really try saline filling, but with careful preparation, it's worth it to try that at least once.

I'm looking forward for your replies.