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.
If delayed, specimens should be refrigerated. â¦ Timed Urine Specimens (12-hour, 24-hour, etc.): Obtain a clean gallon container from the Laboratoryâs Central. Processing Area when a preservative is needed. If a preservative is not needed, obtain the container from Receiving. and Stores.