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Flame retardant test  ›  Oxygen index calculation tool
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ASTM D2863,BS EN ISO 4589-2
NL
Oxygen% 26.9 26.9 26.9 26.9 26.9 26.9
Reaction(X|O) O X O O O X
NT Cf
Oxygen% 26.9 26.9 26.9 26.9 26.9
Reaction(X|O) X X O O O
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Calculation
Cf k d OI
OI = Cf+kd = 32.6% + -0.45 X = 32.5%
∑(ci-OI)2 σ 2/3σ 3/2σ
0.125 32.6% -0.45 0.2%