What is the minimum level of purity required?

What is the minimum level of purity required?

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Per the European pharmacopeia the level of purity required is between 90 – 96% to be called as Medical Grade Oxygen. Such purity can be seen using Oxygen analyzer that is equipped on the machine and in any manner if the machine is unable to provide the purity per the standards, then it stops and switches automatically to the other (machine or cylinder manifold). Hence, the hospital is always having a continuous supply of Medical grade oxygen.

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