Osha breathing zone radius pro#
Osha breathing zone radius series#

The Breathing Zone of an employee is an area around the employee's mouth and nose that is small enough to accurately represent the air breathed by the employee. Source: OSHA's Small Entity Compliance Guide for the Respiratory Standard Breathing Zone In addition to classifying respirators by the method of providing clean air to the employee, respirators can be classified by the physical/dimensional characteristics of the respirator itself.

Self-Contained Breathing Apparatus (SCBA).

Air-Supplied / Supplied-Air / Atmosphere-Supplying Respirators.

There are also three ways to supply pre-cleaned air to the wearer:

Osha breathing zone radius series#

Usually, one type of cartridge is stacked in series with the other type of cartridge. Combination - This is simply a combination of the two methods above.

Gas/Vapor - Absorption/adsorption of a toxic substance that is too small to be caught by particulate filters.Particulate - Filtering particles from the air based on size.There are three methods of purifying, or filtering, the air: Supply clean air from an outside source.Purify the air surrounding the employee.There are two ways to provide clean air to the individual wearing the respirator: This collection mechanism does not favor a certain particle size. This mechanism is responsible for collecting smaller particles.Įlectrostatic attraction: Oppositely charged particles are attracted to a charged fiber. Again, this mechanism is responsible for collecting larger particles.ĭiffusion: Small particles are constantly bombarded by air molecules, which causes them to deviate from the airstream and come into contact with a filter fiber. Interception: As particles pass close to a filter fiber, they may be intercepted by the fiber. This mechanism is responsible for collecting larger particles. Inertial impaction: With this mechanism, particles having too much inertia due to size or mass cannot follow the airstream as it is diverted around a filter fiber.

The OVS Tube Holder (224-29V) is designed to accommodate the 13 mm diameter of SKC OVS tubes, provide a convenient clip to attach the tube in the breathing zone, and protect the tube during sampling.These capture - or filtration - mechanisms are described as follows: The size of all the OVS tubes is 13→8 x 75 mm (Length x OD) and the tubes have open glass ends.

Osha breathing zone radius pro#

Meet OSHA and NIOSH design specificationsįor mixed-phase sampling using a true inhalable sampler that meets ISO 7708/CEN, see the IFV Pro Sampler.

Low backgrounds ensure sample integrity.

Available with a variety of sorbents for special uses.

Collect vapors and aerosols simultaneously.

Sorbent and filter combined in one tube for NIOSH and OSHA.

A flow rate of 1 L/min is typically used, and the samples are solvent extracted and analysed by gas chromatography (GC) or high performance liquid chromatography (HPLC) with detector. Only cleaned and verified materials are used in OVS tubes to ensure low background interference. Ideal for sampling pesticides, explosives and glycols. Aerosols and vapours can be collected simultaneously. The tubes combine sorbent and filter in one tube a filter to trap aerosols and a two-section sorbent bed to adsorb vapours in one specially constructed glass tube that eliminates filter and tube sampling trains.