i don't know, why do you even need to know. Go to an expert!

Paul Alan Dollard has written:

'A periodic reparable-item inventory model'

Not reparable; not capable of being repaired, recovered, regained, or remedied; irretrievable; irremediable; as, an irreparable breach; an irreparable loss.

Did you mean, "What is the Prefix of Recoverable?" If so, the prefix in the word "Recoverable" is "Re" which means "back" or "again".

The question is irrelevant. The use of water predates the existence of labs.