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Sir, when can I change the cylinder in the hospitals? The cylinder contains 2000 psi Should I change it at 1000 psi? Or at 500 psi Is there a reference or standard for that?
Sir, when can I change the cylinder in the hospitals? The cylinder contains 2000 psi Should I change it at 1000 psi? Or at 500 psi Is there a reference or standard for that?