The SGWZZ-1 Automatic Polarimeter is characterized by employing the light-emitting diode instead of the previous sodium lamp which are with low service life and easy to be damaged as the light sources, and the service life of the lighting-emitting diode is more than 5,000 hours. Thus, the inconvenience caused by the need to exchange the sodium lamp by the users will be greatly eliminated. Another feature of this polarimeter is that the temperature of the sample chamber can be consistent with the ambient temperature; therefore, the inconvenience and the error of the measure caused by the temperature rise of the sample chamber can be1 avoided.
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