NBN EN ISO 4589-3 : 1996

Committees responsible
National foreword
Foreword
Introduction
Method
1 Scope
2 Normative reference
3 Definitions
4 Principle
5 Apparatus
6 Calibration and maintenance of equipment
7 Preparation of test specimens
8 Procedure
9 Calculations and expression of results
10 Procedure C - Comparison with a specified minimum
     value of the oxygen index at a specified
     temperature (short procedure)
11 Precision
12 Test report
Annexes
A (normative) Measurement of flammability temperature
     (FT)
B (informative) Inter laboratory test data on
     flammability temperature
C (informative) Typical test results sheet
Tables
B.1 Summary of round-robin results
C.1 Values of k for calculating the oxygen index
     concentration from determinations made by Dixon's
     'up-and-down method'
Figures
1 Diagram of typical apparatus for determination of
     oxygen index at elevated temperature
2 Diagram of typical heated chimney
3 Diagram of typical form of preheater and base of
     assembly for test chimney
4 Diagram of typical chimney outlet restrictor
5 Design of support frame for non-self-supporting
     test specimens
6 Diagram of typical specimen-holder transfer tool
7 Details of test specimen support

Describes methods for determination of minimum concentration of oxygen, mixed with nitrogen, for supporting combustion of small vertical test specimens under specified test conditions in temperature range 25 deg C and 150 deg C.