Only properly equipped air purifiers can filter out vapor, gas, and particles. The type of gas, vapors, and particles encountered will determine the gas mask filter that is used.
There are many types of gas filters depending on the application and the gas being used. You can choose from a wide range of gas masks with filters including, Israeli gas mask, M 15 gas mask, and nato gas mask on https://www.gasmaskpro.com/gas-masks/small-israeli-gas-mask
GAS MASK FILTER CODIFICATION
There are several types of gas mask filters for each category depending on the type of gas or vapor. Every respirator cartridge has a label that includes a letter and a color to indicate the gas or family it is of, in accordance with EN 14687 European standards.
Categories of gas mask filters:
Air-purifying respirator filters are classified according to EN143/A1 standards.
– Half-mask respirator: 50x the OEL
– Full-face respirator with mask: 2000 times the OEL
. Class 1 (lower efficiency). Canister filter (ex. A1) – Small capacity, gas rate less than 0,1% volume
. Class 2: Cartridge filter (ex. ABEK2) – intermediate capacity, lower gas rate than 0.5% volume
. Class 3: A gas rate lower than 1% per liter
There are several particle filter classes for gas mask filters:
– P1 Class Filters – Low efficiency. Stop at least 80% of the aerosol (penetration less than 20%).
– P2 Class Filters – Intermediate Efficiency, Stop at least 94% (penetration under 6%).
– P3 class Filters – High efficiency. They stop at least 99.95% of this aerosol (penetration less than 0,05%)
Combination filters (gas and particles).
A combined gas mask filter stops both gases and particles, as the name suggests. These respirator cartridges filter both gases and particles. They are heavier than other types of cartridges, but they are also more efficient. First, air enters a particle filter, which is also called a pre-filter. Then it passes through a gas filter.
The combined gas and particle filters offer safety against gases and paint droplets. These protective cartridges can be used to protect the respiratory system from liquid spraying.