Hope this helps. And I hope its right. Here goes
First figure your concentration--10u/1000ml
Multiply that by 1min/.002u (which is 2 miliunits i think)
Then multiply that answer by 60 (60 min in 1 hour) to get your answer in ml/hr.
I got .3 ml/hr.
I'm sorry if it's wrong or if i confused you. Just trying to help.