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credits bmbl December 7 '06.doc - Central Michigan University

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Appendix A<br />

Table 4. Reference for Applicable Containment Tests<br />

Test<br />

Cabinet Type by Class<br />

I II III<br />

HEPA Filter Leak (F.5) 1 (F.5) (F.5)<br />

Airflow Smoke<br />

Pattern<br />

No smoke shall<br />

reflux out of<br />

BSC once drawn in.<br />

(F.4)<br />

Cabinet Integrity N/A (F.6) [p.138-141] 2<br />

Face Velocity<br />

Open Front<br />

Face Velocity<br />

Gloves Ports /<br />

No Gloves<br />

Water Gauge<br />

Pressure Glove<br />

Ports & Gloves<br />

75-125 lfpm<br />

(F.3.3.3.3)<br />

150 lfpm<br />

(F.3.3.3.3)<br />

N/A<br />

75 lfpm - type A1;<br />

100 lfpm type A2,<br />

B1& B2:<br />

(F.3)<br />

N/A<br />

N/A<br />

N/A<br />

N/A<br />

NA<br />

(- 0.5 "w.c.”)<br />

[p.145]<br />

Downflow Velocity N/A (F.2) N/A<br />

1. Parenthetical references are to the NSF/ANSI Standard 49 2004, letters and numerals<br />

indicate specific sections and subsections.<br />

2. Bracketed reference ([ ]) is to the Laboratory Safety Monogragh, Page numbers are<br />

indicated.<br />

330

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