Page 243 - Globus Group Catalogue

GUIDE TO HEARING PROTECTION STANDARDS

EN 352 Series
The requirement in relation to the ability of hearing protection products to reduce noise below daily limit levels is addressed in this standard by
requiring the sound attenuation of the products, measured in accordance with EN 24869-1, to be not less than a specified minimum.
EN352 series of standards distinguish between different types of hearing protectors and each type has to comply with the respective
requirements. The main types can be identified using the following extensions:
- EN 352-1:2002 applies to ear defenders
- EN 352-2:2002 applies to earplugs
- EN 352-3:2002 applies to ear defenders attached to industrial safety helmets

GUIDE TO RESPIRATORY PROTECTION STANDARDS

EN 149:2001+A1:2009

This European Standard specifies minimum requirements for filtering half masks as respiratory protective devices to protect against particles
except for escape purposes. A particle filtering half mask covers the nose and mouth and chin and may have inhalation and/or exhalation
valve(s). The half mask consists entirely or substantially of filter material or comprises a facepiece in which the main filter(s) form an inseparable
part of the device. It is intended to provide adequate sealing on the face of the wearer against ambient atmosphere when the skin is dry or
moist and the head is moved. Air enters the particle filtering half mask and passes directly to the nose and mouth area of the facepiece or via
an inhalation valve(s). The exhaled air flows through the filter material and/or an exhalation valve (if fitted) directly to the ambient atmosphere.
These devices are designed to protect against both solid and liquid aerosols.
Particle filtering half masks are classified according to their filtering efficiency and their maximum total inward leakage. There are three classes of
devices; FFP1, FFP2 and FFP3. In addition, particle filtering half masks are classified as single shift use only, marked with symbol ‘NR’ or as reusable
(more than one shift) – marked with symbol ‘R’.
Performance tests within this Standard include filter penetration, extended exposure (loading) test, flammability, breathing resistance and total
inward leakage. Reusable products are also subjected to cleaning, storage and mandatory clogging resistance tests. The clogging resistance test
is optional for non-reusable products.

DOLOMITE TEST
The Dolomite test is an optional test under Standard EN 149:2001+A1:2009. Respirators which pass the dolomite clogging test are proved to
provide more comfortable breathing whilst wearing the respirator and will be marked with symbol ‘D’ after the class of respirator, such as FFP2 NR D.

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