According to ECSS-Q-70-21 and ASTM D 2863
Upward propagation according to NHB 8060-1B
Toxicity classes according to NHB 8060.1A:
OK : CO<=25 and TO<=100 and OD<=26
Reject 1: CO<=25 and TO<=100 and OD > 26
Reject 2: CO < 25 and TO > 100 and OD > 26
Reject : CO> 25 and TO> 100
CO : Carbon Monoxide
TO : Total organic
OD : Odor