Melting Point Apparatus

About Melting Point Apparatus

Melting Point Apparatus is a precision laboratory instrument used for determining the melting point of solid substances, which helps in identifying purity and chemical composition. It is widely used in pharmaceutical, chemical, educational, and research laboratories for accurate thermal analysis.

The apparatus works by heating a sample placed inside a capillary tube at a controlled rate and recording the temperature at which the substance changes from solid to liquid. Modern digital models feature microprocessor-based temperature control, LED display, and automatic detection systems for enhanced accuracy and repeatability.

The unit typically consists of a heating block or silicon oil bath, temperature sensor (PT-100), magnifying lens, illumination system, and digital temperature indicator. It ensures uniform heating and precise observation of melting behavior.

Key Features

• High precision digital temperature display
• Uniform heating with controlled rate adjustment
• PT-100 sensor for accurate temperature measurement
• Built-in magnifier and illumination for clear observation
• Compact and user-friendly design
• Suitable for multiple sample testing (in advanced models)

Technical Specifications

• Temperature Range: Ambient to 300C / 400C
• Accuracy: 0.5C to 1C
• Display: LED / LCD digital display
• Heating Rate: Adjustable (0.5C to 5C/min)
• Power Supply: 220230V AC, 50 Hz
• Sample Type: Capillary tube method

Applications

• Determination of melting point of chemicals
• Purity testing of pharmaceutical substances
• Quality control in laboratories
• Research and educational experiments

Working Principle

The sample is filled in a capillary tube and placed in the heating chamber. The temperature is gradually increased at a controlled rate. The temperature at which the sample melts is recorded as the melting point, indicating purity and identity of the substance.