Recipe for Sheather's sucrose solution
454 g granulated sugar
Heat the tap water to near boiling. Add the granulated sugar, and stir until the sugar is dissolved. Allow the mixture to cool to room temperature, and then add the formaldehyde. Check the solution's specific gravity, and adjust it to 1.27 by adding water or sugar.
*Source: Blagburn BL, Butler JM. Optimize intestinal parasite detection with centrifugal fecal flotation. Vet Med 2006;101(7):455-464.