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Personal Protective Equipment





Prior to using filtering equipment for

respiratory protection the following con-

ditions are critical to be checked: compo-

sition, type, and properties of the harm-

ful substances in the production area

combined with oxygen concentration of

the inhaled air and work environment


Basic types of hazards affecting respiratory

system organs include:


Gases and vapors;

Lack of adequate oxygen supply.

The difference between PPE for respiratory

protection is defined by the difference in

physical characteristics of various substances

and by the ways these substances affect

human’s health.

Aerosols can be described

as particles weighed in

the air.

These can be fine

dust particles, liquid drops,

and suspensions. The parti-

cles are electrified by the

Earth’s magnetic field, thus

the respiratory PPE against

solid dust particles and

mists is based on electro-

static filtering.

Filtering equipment can ranges from a light

single use half-masks

(respirators) and

half-masks/full face masks

with isolated

face area and replaceable cartridge filters to

fully supplied air respirator


Gases and vapors

are both

gaseous substances that are

distinguished only by the way how the mole-

cules of each substance are formed.

Gas and vapor filtration is based on sorption.

Gases are chemically bonded. Some of the

respiratory PPE include coal filters impreg-

nated with relevant sorbents.

Lack of adequate oxygen supply is the

condition when environment’s oxygen

concentration is less than 17.5%.

Relatively small decrease in oxygen concen-

tration can cause somnolence while signifi-

cant decrease in oxygen concentration can

lead to loss of consciousness or fatality.

Filtering PPE is prohibited from use when

there is a risk of significant decrease of oxy-

gen concentration. Instead, only full face

masks and air supplied respirator systems

are allowed to be used in such environ-


Failure to use or improper use of respira-

tory PPE in hazardous environment may

lead to generation of professional

chronic diseases.

It is important to keep in mind that anti-

aerosol PPE does not protect against

gases and vapors, and PPE designed for

protection against gases and vapors

does not protect against aerosols.

Respiratory PPE’s lifetime is defined by

the following criteria:

Аnti-aerosol filtering half-masks can be

worn until the shortness of breath occurs;

Аnti-gas filters can be used until nuisance

and odors begin permeating through.

Key and necessary factors of reliable res-

piratory protection:

Technoavia’s technical experts can assist

you with proper selection of respiratory

PPE relevant to the type and concentration

of harmful substances.

PPE’s quality is proven by the manufac-

turer’s expertise and reputation.

All PPE range products offered by Tech-

noavia are properly certified.

Face-fitting is one of the key factors of

proper respiratory protection. A person can

inhale up to 100% of the unfiltered air if

there is a gap between face and a filtering


How to achieve the best fit when wear-

ing protective respirators?

Employee should never underestimate the

importance of use of good quality and high

reliability respiratory PPE against environ-

mental risk factors.

Employees need to be trained on PPE don-

ning and doffing and correct fit check.

A respirator should have a nose clip, nose

clip liner, and adjustable head straps.

Respirator’s comfort is achieved by lower re-

sistance to breathing, good quality lining

material, and an exhalation valve.

Instructions for use materials should be eas-

ily accessible at an employee’s work place

and in changing rooms.

Suction should never be experience while a

respirator is on.

These factors should never be neglected:

Check for authenticity of the compliance


Check for packaging quality. Damaged pack-

aging or non-authentic packaging can indi-

cate that a PPE has possibly been contami-

nated with risky substances.

Critical importance of Respiratory Protection

Respiratoric protection