PRO CHOICE SAFETY GEAR CATALOGUE - Flipbook - Page 93
Step 1. Choose a Protection Class:
The different types of filters specified in the table and AS/NZS 1716:2012. The classes
are distinguished by their gas absorptive capacity and by their size and mass.
CLASS
CLASS
P1
P2
Filters are classified in one of the following:
• ProValve exhalation valve for decreased
exhalation resistance and heat stress
• Reduces potential for wearer
contamination of their environment
• Stays comfortable for longer
• Lower unit cost
PC821
P2
RESPIRATORY PROTECTION
P2 NO VALVE
92
PC315
P1
P1 WITH VALVE
PC822
PC305
P2
P2 WITH VALVE
PC823
PC321
P2
P2 WITH VALVE
P2
P2 WITH VALVE
& ACTIVE CARBON FILTER
PC531
PC2122
P2
P2 WITH VALVE
& ACTIVE CARBON FILTER
PCFFP2V
The respirator cannot protect you if it does not fit your face. It is recommended that wearers be fit tested in accordance with
AS/NZS 1715: Selection, Use and Maintenance of Respiratory Protective Equipment. It specifies that users of any tight fitting
respirators are to be fit tested prior to starting work and then at least annually after this. There are 2 types of facial fit testing:
QUALITATIVE FIT TEST
A facial fit test giving numerical results and not relying
on the subject’s response to a test agent.
P2
A facial fit test to identify pass/fail results and relying
on the subject’s response to a test agent.
CHEMICAL CLASS
HIGH
absorption filters
EXAMPLES OF CONTAMINANTS/USES
Solvents (with boiling point above 65°C)
Acid gases
Chlorine/sterilization of water, chemical manufacture; hydrogen chloride/chlorinated
organic chemical manufacture; steel pickling
B2
Acid gas and hydrogen cyanide (HCN)
Plastics manufacture; gold ore refining
B3
Acid gas and hydrogen cyanide (HCN)
HCN fumigation
E
Sulfur dioxide (SO2)
SO2/casting of metals; bleach manufacture; manufacture of sulfuric acid; fertiliser
manufacture; metal cleaning; petroleum refining
G
Agriculture chemicals
Low vapour pressure (below 1.3Pa at 25°C) organic
vapours, pesticide spraying, mixing manufacture
K
Ammonia (NH3)
NH3/refrigeration; manufacture of fertilisers, explosives,
plastics; low boiling point amines/chemical manufacture
Hg
Mercury
Metallic mercury/chemical industry; inorganic mercury compounds
NO
Oxides of nitrogen
Oxides of nitrogen
MB
Methyl bromide
Fumigation
AX
Low boiling point organic compounds
(below 65°C)
As specified by the manufacturer, eg. dimethyl ether, vinyl chloride
Specific chemical name
For use against specific chemicals not falling in the above type description
as specified by the manufacturer, eg. hydrogen fluoride
Specific
Chemical
Type
PARTICULATE FILTER
CLASSIFICATION
When sealed to a suitable former and tested, non-powered respirator, filters should
not show penetration in excess of the following:
CLASS
P1
no more than
20%
CLASSIFICATION
PA R A M O U N T S A F E T Y. C O M
MEDIUM
absorption filters
absorption filters
3
P2 WITH VALVE FLAT FOLD
Step 4. Fit Test:
QUANTITATIVE FIT TEST
P2
P2 WITH VALVE FLAT FOLD
2
CLASS
Organic vapours
B AUS or B1
P2 NO VALVE
P2
LOW to MEDIUM
A (All classes)
Step 3. Choose a Style of Respirator:
P1
LOW
FILTER TYPE
CLASS
1
absorption filters
• Less likely to fog up glasses or goggles
PC301
CLASS
AUS
Step 2. Choose a Valved or Unvalved Respirator:
P1 NO VALVE
CLASS
PRO CHOICE SAFETY GEAR
GAS AND VAPOUR FILTER
CLASSIFICATION
CLASS
CLASS
P2
no more than
6%
P3
no more than
EFFICIENCY
0.05%
EXAMPLES OF CONTAMINANTS/USES
P1
80% (particles to 1μm micron =
0.001mm size)
Dusts
P2
94% (particles to 0.3μm micron =
0.0003mm size)
Toxic dusts including asbestos, welding fumes
P3
99.95% (particles to
