I would say you should use or test it once a week to ensure it is working properly in an active laboratory since it is a workplace with significant chemical hazards so it would give peace of mind to know on a quite regular basis that it can be relied on in case of an emergency like an eye flush for example.
When grapes become fermented, they turn into wine.
Answer:
sugar
Explanation:
they are white, it pours easily and you can hold them up as grains
