LS-OI100 Oxygen Index Tester
Oxygen index tester for comparing the burning behaviour of plastics, rubber and foam, with a 100 mm internal-diameter combustion column and oxygen–nitrogen gas controls. Select the holder and verification scope for your specimen and method.
Control unit shown. Combustion column, specimen holders and gas accessories are confirmed in the quoted supply list.
Defined Combustion Column
A 100 mm internal diameter and 450 mm height define the listed column. Confirm the complete assembly against the required test procedure.
Oxygen–Nitrogen Gas Control
Dedicated gas controls and pressure instrumentation support setting up the test mixture. Flow range and concentration verification are specified for the selected method.
Specimen-Specific Holders
The listed scope covers self-supporting and non-self-supporting materials. Select the holder around specimen dimensions, flexibility and preparation.
Comparative Material Testing
Use oxygen index data to compare polymer formulations under consistent conditions, alongside the mechanical and thermal properties required by the product specification.
| Test Principle | Oxygen index in an oxygen–nitrogen gas mixture |
| Combustion Column Internal Diameter | 100 mm |
| Combustion Column Height | 450 mm |
| Flowmeter Accuracy Class | Class 2.5; not an oxygen-concentration accuracy specification |
| Pressure Gauge Accuracy Class | Class 2.5 |
| Gas Supplies | Oxygen and nitrogen; purity and supply equipment specified with the method |
| Gas Inlet Pressure | 0.2–0.3 MPa |
| Working Gas Pressure | 0.05–0.15 MPa |
| Operating Ambient Temperature | 10–35°C |
| Operating Relative Humidity | 45–75% |
| Specimen Support | Self-supporting and non-self-supporting materials; holder selected for specimen geometry |
| Configuration to Confirm | Gas-flow range, oxygen measurement, calibration, ignition accessories, utilities and report format |
Application & Selection Guide
Oxygen index for polymer burning-behaviour comparison
Oxygen index describes the gas mixture needed to sustain combustion of a prepared specimen under the selected test conditions. Define conditioning, dimensions, support, gas measurement, ignition, observation and calculation before comparing results. It is distinct from calorific value, HDT/Vicat and melt flow, so select each instrument around the property required by the material specification.
What should I include in an LS-OI100 inquiry?
Provide the material, specimen dimensions, support type, expected oxygen index, daily test count, method edition and required documentation. Include gas supply details, ventilation, electrical requirements and destination.
Is the pictured control unit the complete test system?
The image shows the control unit only. Request the quoted supply list for the combustion column, specimen holders, ignition accessories, tubing, regulators, gas supplies and calibration items.
Does class 2.5 mean ±2.5% oxygen concentration accuracy?
No. Class 2.5 is the listed accuracy class of the flowmeter and pressure gauges. Oxygen concentration range, resolution, accuracy and verification must be confirmed separately for the selected configuration.
Is LS-OI100 confirmed for ISO 4589-2 or ASTM D2863?
These are relevant oxygen index methods, but compliance with a specific edition is not established for this listing. Submit your method so gas measurement, column geometry, specimen support, ignition and verification records can be checked before ordering.
Can oxygen index replace a fire classification test?
No. It compares burning behaviour under defined laboratory conditions. It does not by itself establish a finished-product fire rating or predict all behaviour in actual service.
Does this model include automatic concentration control and reports?
Closed-loop concentration control, automatic endpoint detection, data storage and report export are not specified for this configuration. Confirm any required automation or reporting functions before quotation.
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