Which fixative is non-aqueous?

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Multiple Choice

Which fixative is non-aqueous?

Explanation:
Non-aqueous fixatives contain little to no water; they fix tissue using organic solvents. Carnoy's fixative achieves this because it is made from absolute ethanol, chloroform, and acetic acid, with no water in the mixture. This rapid, dehydrating combination preserves cellular detail in a way that differs from aqueous fixatives. In contrast, formalin and Bouin's are water-containing solutions, and a typical alcohol fixative is often used in a way that includes water, so they’re not non-aqueous.

Non-aqueous fixatives contain little to no water; they fix tissue using organic solvents. Carnoy's fixative achieves this because it is made from absolute ethanol, chloroform, and acetic acid, with no water in the mixture. This rapid, dehydrating combination preserves cellular detail in a way that differs from aqueous fixatives. In contrast, formalin and Bouin's are water-containing solutions, and a typical alcohol fixative is often used in a way that includes water, so they’re not non-aqueous.

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