Zinc oxide is the metal zinc that has been oxidized. The chemical formula is ZnO, 1 zinc atom and 1 oxygen atom held together by an ionic bond. Zinc oxide does occur in nature as the mineral zincite, but it is quite rare and commercially unavailable.
I have done a few stool samples in my time and have always just stored them in the fridge, until the next day to take them into the docs. Good luck hun I hope they get it sorted.
To perform the procedure, you need the following items in addition to a fresh stool sample: A probiotic that should be taken before the transplant by the patient (not the donor), and for at least 60 days following. I suggest staying on it for life.