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The melting point instrument is designed in accordance with the prescribed melting point detection method, the instrument uses electronic technology to achieve temperature programming, initial melting and final melting digital display
.
A linear-corrected platinum resistor is applied as the sensing element, and an electronic circuit is used to achieve fast "start temperature" setting and a four-stop selectable linear heating rate
.
The instrument adopts the specified capillary tube as the sample tube, and observes the melting process of the sample in the capillary tube through a high-magnifying glass, which is clear and intuitive, and is an ideal melting point detection instrument
for chemicals, dyes, spices, rubber and other behaviors.
Melting point determination is the basic means of identifying the nature of substances, and it is also one of the important methods of
purity determination.
Therefore, the melting point tester has an important position in the chemical industry and pharmaceutical research, and is an instrument
for the production of spices, dyes and other organic crystal substances.
The problems it pays attention to can improve the service life
of the instrument.
1.
The sample shall be baked dry as required, crushed in a dry and clean mill, and the capillary should be struck with free fall to make the sample filled, the filling height should be consistent, and the specific requirements should meet the regulations
.
2.
When inserting and removing the capillary, care should be taken to avoid breakage
.
3.
The linear heating rate is different, and the greenhouse results are inconsistent, requiring specifications
.
4.
The measured sample is filled with five capillaries at a time, and the average value of the middle three readings is taken as the measurement result after the determination is taken to eliminate the occasional error
caused by the capillary tube and sample preparation filling.
5.
Before the capillary tube is inserted into the instrument, a soft cloth should be applied to clear the contaminated substances on the outside to avoid staining
the oil bath.
6.
If you need to replace the oil bath tubing, follow the method described in the preparation before
use.