Tested and Certified to American Standard: Hood Performance

Function Test Condition Duration Requirement Result
Speed of donning Remove from pack and wear properly Less than 30 secs < 30 secs pass
Total inward leakage Test subjects performing standard exercises 2.5 mins < 2% <0.01%
Ocular leakage Test subjects performing standard exercises 2.5 mins < 20% <0.1%
Carbon dioxide build-up Breathing machine 25 cycles per min < 2.5% < 1.7%
Breathing resistance Probed headform with breathing machine 30 cycles -3.2 in (-81.5 mm) +1.2 in (+30.6 mm) pass
Soot particulate Inhalation breathing resistance with 200 mg/m3 soot 5 mins < 8 in (< 204 mm) pass
Soot particulate Exhalation breathing resistance with 200 mg/m3 soot 5 mins < 6 in (< 153 mm) pass