<prompt> In formocresol, ratio of formalin to cresol:3:022:031:022:01  <response>: 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 Buckleys formocresol, and thoroughly mix again.Key ConceptIn formocresol, we use 19 formaldehyde and 35 cresol i.e. ratio of 1:2. 