A.
旋光计测量室不放任何试管,找出弱照度的均匀暗视场,记下此时刻度盘的左右读数平均值,即零点校正值。Without any test tube in the polarimeter measuring chamber, find out the uniform dark field of view with weak illumination, and record the average reading value from the left and right dial at this time, that is, the zero correction value.
B.
旋光计测量室放入蒸馏水试管,找出弱照度的均匀视场(零度视场),记下此时刻度盘的左右读数平均值,即零点校正值 Put tube contained distilled water into the polarimeter measuring chamber, find out the uniform field of view (zero degree field of view) with weak illumination, and record the average reading values from the left and right dial at this time, that is, the zero correction value
C.
将旋光仪刻度盘旋转至零刻度附近,当无法旋转时,刻度盘读数即为零点校正值Rotate the dial of the polarimeter to the zero scale. When it cannot be rotated, the reading value of the dial is the zero correction value
D.
旋光计测量室不放任何试管,找出照度均匀的亮视场,记下此时刻度盘的左右读数平均值,即零点校正值。Without any test tube in the polarimeter measuring chamber, find out the uniform bright field of view with strong illumination, and record the average reading value from the left and right dial at this time, that is, the zero correction value.