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Frequently Asked Questions

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  • How do I calculate what protection factor is needed?

    Dust concentration (mg/m3) is divided by OEL (occupational exposure limit). The resulting number must be lower than the Nominal protection factor of the mask.

    e.g.:
    Particle concentration level: 20mg/m3
    OEL: 2mg/m3
    Other: no risk for lack of oxygen, normal temperature
    Lowest possible protection factor: 20 / 2 = 10

    For protection factor 10 our CN P2, P2 V, P2 CV and P2 HF masks are needed, they are FFP2 classified with protection factor 12.

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  • Does your masks protect from bacteria and viruses?

    Yes, all our masks protects against bacteria and viruses but to different extent depending on the bacteria/virus it self.

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  • For how long can a mask be stored?

    There is a date on the bottom of every individual box and on the side of every transport case that tells the shelf life, providing the storage instructions are followed.

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  • How does the exhalation valve work?

    A valve is made by a rubber membrane that opens up when the person exhales and closes when exhalation ends. The valve makes exhalation easier and helps to reduce temperature inside the mask, minimizing condensation and moisture build-up.

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  • Is it possible to get product data sheets via computer files?

    Yes, product data sheets can be found on our website under each product.

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  • What if the user has facial hair?

    Facial hair may affect how the mask fits to the face and there by also the masks efficiency.

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  • Do you have product display stands?

    Yes, please contact the local distributer. If you are a distributer please contact your responsible sales person at SEGRE.

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  • What does the text and codes on the mask stand for?

    CN P2 (V, CV) = Product name
    CE 0194 = inspection site: Inspec UK
    EN 149:2001 = Standard
    FFP1 (2,3)= classification

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  • What does "D" stand for in the text code on the mask?

    D = dolomite. This is an optional test in the EN 149:2001 standard called clogging test or dolomite test. The masks are tested in an atmosphere that contains a high concentration of dolomite dust followed by testing and measuring of breathing resistance and filtration. The main point of this test is to make sure that the mask can be used for a long time with maintained performance in breathing resistance and filtration.

    All Segre CNP1, P2, P3 masks, except carbone masks, classified under EN 149:2001 standard have been tested and are approved to be FFP1D, FFP2D and FFP3D classified. For the user this means that he can be sure these masks are good to use for more than 8 hours.

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  • For how long can a mask be used?

    According to EN 149:2001 standard a mask should not be worn more than 8 hours, or one working shift if shorter than 8 hours. Segre has masks marked with a "D", FFP1D, FFP2D and FFP3D, which will provide protection more than 8 hours. The EN 149:2001 standards does not include any tests to tell exactly how many hours the mask will be protective, only that it still has a fully satisfied filtration and breathing resistance after 8 hours.

    Mask with NO "D" marking, carbone masks, should not be worn more than 8 hours. Mask marked with a "D" can be worn at a minimum of 8 hours.

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  • How does the mask color code work?

    Blue strap holders (and valve) mean FFP1 approved classification, protection factor 4.

    Red strap holders (and valve) mean FFP2 approved classification, protection factor 12.

    Yellow strap holders (and valve) mean FFP3 approved classification, protection factor 50.

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  • Which mask should be used when welding?

    CN P2 CV

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