The top edge of the test sample is ignited, and the oxygen concentration in the flow is decreased until the flame is no longer supported. D — It is obtained by pooling the within-laboratory standard deviations of the test results from all of the participating laboratories. The ame igniter shall comprise a tube, with an inside diameter of 2 6 1 mm, that can be inserted into the chimney to apply the test ame. It is assumed that the amount of variation in thickness for such materials will be controlled by other standards.
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D The test specimen of Type VI is suitable for thin film that is self-supporting when it is rolled. Structurally zstm specimens are preferably marked on at least two adjacent faces.
It is the ast of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Therefore, the results are valid only for the re-test-exposure conditions described in this test method.
Let the gas flow purge the chimney for at least 30 s prior to ignition of each specimen, and maintain the flow without change during ignition and combustion of each specimen. Formally confirming that your products and services meet all trusted external and internal standards.
Oxygen Index ASTM D
D — 06a 1. The chimney shall be mounted securely on the base to prevent air leaks. Current edition approved July 10, The test results relate only to the behavior of the test specimens under the conditions of this test method and the results must not be used to infer the fire hazards of the material in other forms or under other fire conditions.
If this involves an internal probe, its position and prole shall be designed to minimize induction of turbulence within the chimney.
ASTM D Standard Test Method for Measuring the Minimum Oxygen Concentration_Ecosafene
A fume extraction system shall be provided with sufficient ventilation or exhaust to remove s2863 or soot expelled from the chimney without disrupting the gas-ow rate or temperatures in the chimney.
For example, for mixtures made using air mixed with oxygen of 10 D — 00 A3. Test Procedure NOTE 8—Some materials exhibit a non-aming type of combustion for example, glowing combustion instead of, or at a lower oxygen concentration than that required for, aming combustion. NOTE 11—The two results, at oxygen concentrations 1.
D — asttm Sr is the within-laboratory standard deviation for the indicated material. A Sr is the within-laboratory standard deviation for the indicated material. If different test conditions are substituted or the end-use conditions are changed, it is not always possible by or from this test to predict changes in the fire-test-response characteristics measured. Designate the oxygen concentration used for the last specimen as CF.
Inspection Validating the specifications, value and safety of your raw materials, products and assets. Correlation with burning characteristics under actual use conditions is not implied.
NOTE 4—For tubes of 75 to mm diameter, a cap converging to an outlet of 40 mm diameter at a level at least 10 mm above the top of the cylindrical chimney has been dd2863 satisfactory for restricting the column opening. Glass Beads in a Bed 7. Dimensions in the table are of the specimen size from which the rolled form is made.
NOTE 14—Some materials exhibit a non-flaming type of combustion for example, glowing combustion instead of, or at a lower oxygen concentration than that required for, flaming combustion. By testing a series of specimens in different oxygen asstm, the minimum oxygen concentration is determined.
This test method describes a procedure for measuring the minimum concentration asstm oxygen that will just support flaming combustion in a flowing mixture of oxygen and nitrogen.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Oxygen Index ASTM D2863
If wet inks are used, ensure that the marks are dry before the specimen is ignited. Dimensions in the table are of the specimen size from which the rolled form is made. It is obtained by pooling the within-laboratory standard deviations of the test results from all of the participating laboratories: Link to Active This link will always route to the current Active version of the standard.
Oxygen Index, in percent, is calculated from the final oxygen concentrations tested.
Note Although this test method has satm found applicable for testing other materials, the precision of the test method has not been determined for these materials, or for specimen geometry's and test conditions outside those recommended herein. We need your help to maintenance this website. Specic hazards statement are given in Section