means the temperature at which the substance changes from solid state to liquid state.

In the field of organic chemistry, the measurement of melting point is a basic means

of organic chemistry, the measurement of melting point is a basic means of

recognizing the nature of substance, and is also one of the important place in the

chemical industry and medicine researches.Also, the melting-point meter is a kind of

necessary instrument in the production of medicines, perfumes, dyestuff and other

organic crystal substances.

Microcomputer melting point meter uses the technology of photoelectric detection

and temperature display by liquid crystal. Type  WRS─2A could measure three

sample at the same time. It has the functions of automatic displaying of initial and

final melting points, automatic recording of the melting curves and calculating

average value. The temperature system uses the linearly corrected platinum resistor as

the detecting element, and additionally, it uses the integrated circuits to realize the

speedy setting of eight-step linearly heating rate for being selected .Since the

initial and final melting-point readings can be stored up automatically, there is no

need for this function to be monitored manually. Type WRS— melting point meter

uses the capillary stipulated by the pharmacopoeia as the sample tube.

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