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Which of the following agents are used as a preservative in ophthalmic solutions?

Which of the following agents are used as a preservative in ophthalmic solutions? Correct Answer quaternary ammonium salts

The combined properties of germicidal activity and low toxicity, high solubility in water, stability in solution, and non-corrosiveness have resulted in many applications of quaternities as disinfectants and sanitizing agents. They are used as skin disinfectants, as a preservative of ophthalmic solutions, etc.

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