Limiting Oxygen Index Tester (LOI) is an instrument that provides accurate determination of the lowest percentage of oxygen required to maintain the ignition of plastic and polymeric materials. This is often referred to as Limiting Oxygen Index (LOI) and is an important characteristic for determining the flammability of a material.
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The instrument creates a controlled gaseous atmosphere in which a sample can be ignited. By being able to control the concentration of oxygen in the environment, it is able to determine where on the combustible curve the material will continue to combust. As such, the LOI tester is widely used for quality assurance, research, and regulatory compliance testing in many industries, such as plastics, packaging, automotive, electrical, and textile.
The LOI tester was designed in accordance with internationally recognized testing methodologies such as ASTM D2863 and IS 13360 (Part 6/Section 19), so that test results can be accepted and used with high accuracy internationally.
Applications
Plastic and polymer testing
Packaging materials evaluation
Electrical insulation materials
Automotive interior components
Textile and coated fabrics
Precise Oxygen Measurement
Equipped with an electrochemical oxygen analyzer for accurate and stable measurement of oxygen concentration.
Digital Timer Control
Programmable timer with high resolution ensures precise measurement of flame duration and burning behavior.
Accurate Temperature Monitoring
Integrated digital temperature indicator allows real-time monitoring of test conditions.
Dual Gas Flow Control System
Independent flow meters for oxygen and nitrogen enable precise control of gas mixture ratios.
Robust Combustion Column Design
Transparent column ensures clear visibility of specimen behavior during testing.
User-Friendly Operation
Simple interface with easy calibration and control for consistent and repeatable results.
Compliance with International Standards
Designed as per ASTM and IS standards for reliable and standardized testing.
Safety-Oriented Construction
Built with protective features to ensure safe operation during combustion testing.
|
Parameter |
Specification |
|
Test Standard |
ASTM D2863, IS 13360 (Part 6/Sec 19) |
|
Oxygen Measurement |
Electrochemical Oxygen Analyzer |
|
Digital Timer |
999.9 sec × 0.1 sec |
|
Temperature Indicator |
Up to 999°C × 1°C resolution |
|
Pressure Gauge |
7 kg/cm² (with 2.5 kg/cm² least count) |
|
Gas Flow Measurement |
Flow meters for Oxygen & Nitrogen (cc/sec) |
|
Specimen Orientation |
Vertical |
|
Power Requirement |
220V AC, Single Phase, 50 Hz |
|
Display |
Digital |
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