TABLE 124.-Refractive index of surcose solutions at 28° C.-Continued TABLE 125.-Correction table for determining the percentage of sucrose by means of the tropical model of refractometer when the readings are made at temperatures other than 28° C1 .17 31 .26 .73 29 0.09 0.09 0.09 0.09 32 .35 .35 .35 .35 .35 .34 .34 .34 .34 .34 .34 63 .63 . 17 .17 . 17 25 43 52 52 .61 .71 25 .25 1 Int. Sugar J. 39, 24s (1937). TABLE 126.-Determination of percentage of sucrose in sugar solutions from the readings of the Zeiss immersion refractometer at 20° C1 1 The values in this table were calculated by J. A. Mathews from the five-place indices of Schönrock as given by Landt, Z. Ver. deut. Zucker-Ind. 83, 692 (1933). 2 The scale readings refer only to the scale of arbitrary units proposed by Pulfrich, Z. angew. Chem. p. 1168 (1899). According to this scale, 14.5-1.33300, 50.0 1.34650, and 100.0 1.36464. If the immersion refractometer used is calibrated according to another arbitrary scale, the readings must be converted into refractive indices before this table is used to determine the percentage of sugar. TABLE 127.-Schönrock temperature corrections for determining refractive index of sucrose solutions by means of a refractometer when readings are made at temperatures other than 20° C. 0.00072 0.00080 0. 00089 0.00097 0. 00105 0. 00114 0. 00122 0.00131 119 106 093 081 068 055 041 028 014 21 0.00009 0.00010 0. 00011 0. 00011 0. 00012 0. 00013 0. 00013 0. 00014 028 043 058 073 088 103 119 135 150 |