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1、折射率的温度校正及换算为可溶性固形物含量(补充件)如采用的折射仪不带有可溶性固形物百分数刻度，仪器校准和样液测定时，折射率的温度校正及换算为可溶性固形物含量的方法如下。A1 用蒸馏水校准折射仪读数，在20时，折射率调至1.3330。温度在1525时，按表A1中的折射率校准。A2 根据在20时，按检测的样液折射率读数，由表A2查得可溶性固形物百分数。测定时温度不在20，需按下式先校正为20时的折射率： N20nt.00013(t-20)式中t为测定时的摄氏度 表A1 纯水的折射率温度折射率温度折射率151.33339211.33
2、290161.33332221.33281171.33334231.33272181.33316241.33263191.33307251.33253201.33299 表A2 20 时折射率与可溶性固形物换算表折射率可溶性固形物折射率可溶性固形物折射率可溶性固形物折射率可溶性固形物折射率可溶性固形物折射率可溶性固形物1.33300.01.354914.51.379329.01.406643.51.437358.01.471372.51.33370.5
3、1.355715.01.380229.51.407644.01.438558.51.472573.01.33441.01.356515.51.381130.01.408644.51.439659.01.473743.51.33511.51.357316.01.382030.51.409645.01.440759.51.474974.01.33592.01.358216.51.382931.01.410745.51.441860.01.476274.51.33672.51.359017.01.383831.51.411746.01.442960.51.477475.01.33733.01.359
4、817.51.384732.01.412746.51.444161.01.478775.51.33813.51.360618.01.385632.51.413741.01.445361.51.479976.01.33884.0/1.361418.51.386533.01.414747.51.446462.01.481276.51.33954.51.362219.01.387433.51.415848.01.447562.51.482577.01.34035.01.363119.51.388334.01.416948.51.448663.01.483877.51.34115.51.363920.
5、01.389334.51.417949.01.449763.51.485078.01.34186.01.364720.51.390235.01.418949.51.450964.01.486378.51.34256.51.365521.01.391135.51.420050.01.452164.51.487670.91.34337.01.366321.51.392036.01.421150.51.453265.01.488879.51.34417.51.367222.01.392936.51.422151.01.454465.51.490180.01.34488.01.368122.51.39
6、3937.01.423151.51.455566.01.491480.51.34568.51.368923.11.394937.51.424252.01.457065.51.492781.01.34649.01.369823.51.395838.01.425352.51.458167.51.494181.51.34719.51.370624.01.396838.51.426453.01.459367.51.495482.01.347910.01.371524.51.39739.01.427553.51.460568.01.496782.51.348710.51.372325.01.398739
7、.51.428554.01.461668.51.498083.01.349411.01.373125.51.399740.51.429654.41.462869.01.499383.51.350211.51.374026.01.400740.51.430755.01.463969.51.500784.01.351012.01.374926.51.401641.01.431855.51.465170.01.502084.51.351812.51.375827.01.402641.51.432956.01.466370.51.503385.01.352613.01.376727.51.403642.01.434056.51.467671.0 1.353313.51.377528.01.404642.51.435157.01.468871.5 1.354114.01.378428.51.405643.01.436257.51.470072.0