Halogen Gas Test Apparatus

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A lab apparatus known as a "halogen gas test apparatus" is used to identify the presence of halogen gases (such as iodine, bromine, fluorine, or chlorine) that are emitted when specific materials, particularly plastics, rubbers, or cables are burned or heated. This test is especially common in cable testing and polymer analysis, where it helps determine how much toxic or corrosive gas a material emits when exposed to fire

Brand	Shanta Engineering
Material	MS, SS
Temperature controlling range	Upto 1000 deg cel
Gas To be Tested	Halogen
Display	Digital
Finishing	Powder coated

 

Features of Halogen Gas Test Apparatus:

• Test Purpose - Determines whether materials emit halogen gases when burned. Commonly used for cable insulation, sheathing materials, and plastics.
• Construction Features - Combustion Chamber (Made of heat-resistant glass or stainless steel) and allows observation of the burning sample. Heating System(Uses a gas burner or electric furnace to heat the sample to a specified temperature (usually up to 800°C). Sample Holder( Supports a small piece of the material for uniform heating.),Gas Collection Tube / Absorption Chamber,The gases evolved from combustion are passed through an absorbing solution (like distilled water).
• Measurement Features - pH Meter (Measures acidity of the solution to detect hydrogen halides like HCl, HBr, etc.). Conductivity Meter (Measures electrical conductivity to quantify halogen acid gas concentration). Glass Absorption Bottle / Gas Scrubber. Ensures all gases bubble through the solution for complete absorption.
• Key Performance Features - Compact, sturdy, and corrosion-resistant construction. Provides accurate and repeatable results. Easy to operate and maintain. Suitable for laboratory and industrial testing. Often complies with IEC 60754 / ASTM D2863 / IS 10810 standards (depending on model).
• Typical Parameters Measured - Change in pH value of absorbing solution. Increase in conductivity (µS/cm) of the solution. Qualitative presence of halogen gases.
• Applications - Electrical cable quality testing. Fire safety material evaluation. Research in polymer degradation and flame retardancy.

Advantages of Halogen Gas Test Apparatus:

• Detects Toxic Gas Emission - Helps identify whether materials emit harmful halogen gases during combustion, which are toxic and corrosive.
• Ensures Material Safety - Used to confirm if insulation or cable materials are halogen-free, improving fire safety standards in buildings, vehicles, and electronic systems.
• Compliance with Standards - Meets international testing standards like IEC 60754 or ASTM D2863, ensuring materials comply with fire safety regulations.
• Simple and Reliable Operation - The apparatus is generally easy to use, requiring minimal maintenance and providing consistent, reproducible results.
• Visual Indication - Provides clear color change indication (using indicator paper or solution), making detection quick and straightforward.
• Cost-Effective Testing Method - It is more affordable compared to complex gas analysis instruments like gas chromatographs or spectrometers.
• Helps in Material Selection- Engineers can compare different materials and choose low-halogen or halogen-free materials for safer applications.
• Environmental Benefits - Encourages the use of eco-friendly, non-halogenated materials, reducing environmental and health hazards during fires.
• Compact and Portable - Most units are small and lab-friendly, suitable for routine testing in quality control labs or educational institutions.
• Quick Results - The test gives results within minutes, useful for rapid quality checks during material development or production.

Process of Halogen Gas Test Apparatus:

• Objective - To determine whether a material (usually a polymer or insulation) releases halogen gases when burned.
• Apparatus Required - Halogen Gas Test Apparatus (includes combustion chamber, gas absorption chamber, and measuring system) Burner / Ignition system , Sample holder, Absorption bottle with distilled water, pH meter or pH ,indicator paper, Conductivity meter.
• Sample Preparation - Cut the sample (usually plastic or wire insulation) into a specified size (commonly 1 g or per standard like IEC 60754).Ensure the sample is clean and dry before testing.
• Combustion Step - Place the sample in the combustion chamber. Ignite it using the burner (usually a propane or butane flame). Distilled water is used to filter the combustion gases (in the absorption chamber).
• Gas Absorption -The combustion gases bubble through distilled water, where any halogen acids (like HCl, HBr) get dissolved. This solution is collected for analysis.
• Measurement - Now, two tests are done on the absorbed solution (a) pH Test Measure the pH of the solution using a pH meter or indicator paper. Low pH (<4) indicates acidic gas — suggesting halogen presence. (b) Conductivity Test Measure the electrical conductivity (in µS/cm). A high conductivity means more halogen acid was released.
• Standards Commonly Followed IEC 60754-1 / 60754-2 – Tests on gases evolved during combustion of materials from cables ASTM D2863 – Oxygen index (related test for flame behavior)
• Safety Precautions - Conduct the test in a fume hood or ventilated area Handle burning samples with tongs Use safety goggles and gloves

Applications of Halogen Gas Test Apparatus in Industries:

• Electrical & Electronics Industry
• Plastic Manufacturing Industry
• Fire Safety & Fire-Resistant Material Testing
• Chemical Industry
• Automotive Industry
• Aerospace & Defense
• Packaging Industry
• Research & Academic Laboratories