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SOP for Operation Procedure for Melting Point Apparatus

OBJECTIVE
To lay down the procedure for Operation of the Melting Point Apparatus for better and error free use

SCOPE
This procedure is applicable for Melting Point Apparatus, installed in Quality Control Department.
RESPONSIBILITY
Execution : Chemist and above - QC department.
Checking : Asst. Manager and above - QC department.

PROCEDURE
  • Fill the capillaries with the sample powder for melting point determination or mini test tubes with sample liquid in case of boiling point determination.
  • Insert the capillaries / mini test tubes through their appropriate openings on the right hand side of the vessel.
  • Switch on the power supply and illumination.
  • Adjust the stirrer speed to its lowest and increase it gradually.


  • Adjust the heating control gradually to get a rate of increase of 30 C / minute initially and 10 C/minute in the vicinity of the expected melting / boiling point.
  • Observe the substance in the capillaries / mini test tubes through the magnifier.
  • When the substance starts melting or bubbles start forming, push the ‘DISPLAY HOLD SWITCH’ and note down the reading on the digital display.
  • Switch OFF the apparatus and allow it to cool.

ABBREVIATION(s)
SOP : Standard Operating Procedure
Q.A : Quality Assurance
No. : Number
Q.C : Quality control
Dept. : Department

REVISION CARD
Nil

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