J-STD-033A Classification of MSD

Level Floor Life (out of bag) at Factory Ambient <= 30°C/60% RH or as Stated
1 Unlimited at <= 30°C/85% RH
2 1 year
2a 4 weeks
3 168 hours
4 72 hours
5 48 hours
5a 24 hours
6 Mandatory bake before use. After bake, must be relowed within the time limit specified on the label