Berkshire Corporation
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Berkshire FAQ Technical Questions: Face Masks
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face masks
   
Can Berkshire masks be gamma irradiated?
No, our masks do not react well to gamma irradiation.
 
Can Berkshire's masks be autoclaved?
1 - Compatible
 
    Product     Steam Heat@ 121° for     15 minutes     Comments & Qualifications
    BM.1.12     1    Compatible when autoclaved in individual wrap
 
Can Berkshire provide me with skin sensitivity information?
Berkshire's primary skin irritation testing has been performed in accordance with the guidelines of the International Organization for Standardization Part 10: Tests for Irritation and Sensitization. Click here to view our Masks Composition and Skin Sensitivity Information Chart.
 
What are BFE and PFE in relation to BCR® masks?
The data included for BCR Masks measures both the masks' ability to protect the environment and the user's ease of use. The Bacterial Filtration Efficiency (BFE) is tested by forcing 3µm bacteria through the mask. The efficiency measures how much bacterial was not forced through; thus higher percentages indicate more efficient filtration. The Particle Filtration Efficiency (PFE) is tested by forcing 0.1µm synthetic latex particles through the mask. As with BFE, higher percentages of PFE indicate more efficient filtration.
 
What is Delta P in relation to BCR® masks?
The Differential Pressure (DP) is a test that measures how easily air is passed from one side of the mask to the other. This indicates how easily the wearer can breathe through the mask, and is indicated by Delta P. Higher differential pressure indicates air is more difficult to push through. This could result in a "blow-by" effect (escape of air, and contamination from the sides of an improperly worn mask), or even incorrect use by the wearer.
 
    BCR® Mask Part Number     Differential Pressure (mm H20/cm2
    BM.2FEWV.12    0.9
    BM.1BEWO.12    3.1
    BM.1.12    1.9
 
 
    Score     Perception
    Above 5.0    Hot
    4.0 to 5.0    Very Warm
    3.0 to 4.0    Warm
    2.0 to 3.0    Cool
    1.0 to 2.0    Very cool