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FAQs on Respiratory Protection

Fit Test NIOSH Bivariate Panel (NIOSH Panel) & Respiratory Tests

The NIOSH Bivariate Panel includes ten individual member cells defined by face width and face length (mm) with a guide to select HFM / FFM
most likely to get best fit. Ensure fit is validated.
Y

120.5 134.5 145.5 158.5
138.5
10
9
6 I-L / II-M I-L / II-M
128.5
7 8
Face length (mm) 118.5 3 4 I-M / II-L I-L / II-M
I-M / II-L / III-S

I-S / II-M I-M / II-S 5 Face length (mm)
108.5 I-M / II-S
1 2
I-S / II-M I-S / II-M
98.5 X
120.5 132.5 144.5 158.5 Face Width (mm)
Face Width (mm)
I: First try size II: Second try size III: Thrid try size

Test for Respiratory protection devices

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