CleanSpace CS302, User Instructions

Page: 12 / 90

12
MASK SELECTION GUIDELINES
No set of guidelines can ensure that you have the right size mask for your face. You must confirm the fit
with a fit test
performed according to OSHA regulations 1910.134. However, the information below will help your
mask fitting specialist to select the mask most likely to fit you and may therefore save time.
Description Diagram
Face Width
Face Length
Using the above definitions of face width and length, the face size of a user can be determined by employing the
NIOSH panel below.
Finally, the tables below specify the fitting sequence that should be employed based on the face size of the user. The
‘fitting sequence’ is simply the order in which the face masks should be checked for fit.
Half Mask Fitting Sequence
NIOSH Panel Number First Try Then Try
1-2 Small Medium
3-7 Medium Small OR Large*
8-10 Large Medium
* If the medium mask fails initially, the mask fitting specialist will determine whether to try the small or large mask next
.