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.
Compston Eric answered on 4/19/2014. Refried beans, a common part of Mexican cuisine, will keep in the refrigerator for two or three days before spoiling. Canned refried beans that have been opened should be used within two days of being refrigerated.Refried beans that you have cooked yourself will stay fresh in the refrigerator for three days.ompston Eric answered on 4/19/2014. Refried beans, a common part of Mexican cuisine, will keep in the refrigerator for two or three days before spoiling. Canned refried beans that have been opened should be used within two days of being refrigerated.