In formocresol, ratio of formalin to cresol:
Correct Answer: 1:02
Description: Formocresol is a solution of 19% formaldehyde, 35% cresol in a vehicle of 15% glycerine and water. To prepare a 1:5 concentration of this formula, first thoroughly mix 3 parts of glycerin with 1 part of distilled waler, then add 4 parts of this preparation to 1 part Buckley’s formocresol, and thoroughly mix again.
Key Concept
In formocresol, we use 19% formaldehyde and 35% cresol i.e. ratio of 1:2.
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