TABLE 95.-Ratio of levulose to total sugar from the Lane and Eynon titration and the polarization by the Mathews formula

[The table gives the percentage ratio (R) of levulose to total reducing sugar calculated from the Lane and Eynon titration and the direct polarization at 20° C. P is the polarization in °S; T is the corrected Lane and Eynon titer; D is the number of volumes to which one volume of the solution polarized was diluted for the titration; and ƒ is the factor used for correcting the percentage ratio found in the table. This correction is given by ƒXD/T and is to be added algebraically. The table can be used when the polarization is made at a temperature other than 20° C by using the temperature coefficient, AR/At°. When the temperature is to, the correction is (AR/At°) (t° — 20°), and is to be added algebraically to the ratio.]

TABLE 96.- -Schoorl method for the determination of reducing sugar in cane molasses

TABLE 97.--Luff and Schoorl method for the determination of invert sugar in cane

[Amounts of dextrose corresponding to titration values when 5 ml of solution and 5 ml of copper reagent (modified) are heated in a water bath for 15 minutes]

1 M. Somogyi, J. Biol. Chem. 70, 607 (1926). 1 ml of 0.005 N thiosulfate equals 0.318 mg of

copper.

TABLE 100.-Pot method of Main for invert sugar

[Using Fehling solution, Soxhlet modification; time of heating in boiling water, 5 min.; indicator, 2 drops of 1-percent methylene blue in each tube]