Table 3.
Flame retardancy of plywood treated with difference additives

Sample	Remaining flame time (sec)	Smoldering time (sec)	Carbonized area (mm2)	Carbonized length (mm)
	less than 10 sec	less than 30 sec	less than 5,000 mm2	less than 200 mm
	F	0	0	7,863	149
G	0	0	5,127	133
H	0	0	3,947	93
I	0	0	2,280	71
J	0	0	2,994	78
K	0	0	4,569	102
L	0	0	4,766	115
M	0	0	7,570	146
N	0	0	8,318	158