Sampling Guide for Air Contaminants in the Workplace - Irsst

ROHS Substances table
48
ROHS Name
CAS
TWAEV
STEV
Ceiling
(mg/m³)
Notes
Sampling
Device
Flow
L/min
Volume
TWAEV
STEV
(L)
Principle
MRV
µg
CVa
(%)
#
meth.
Remarks
Asbestos, Chrysotile
12001-29-5
1 f/cc
5 f/cc
C1
EM
Cassette with conductive extension and
mixed cellulose ester filter, Environmental
Express CS250080
918 MCE filter-25
0,5-16 PCM
400 IRSST
243-1
Open cassette sampling. A flow rate not exceeding 2.5 L/min is recommended
for determining an average concentration. Supply at least 2 blanks per series of
samples or 10% of sample total, whichever is highest. Send the samples in a
cardboard box supplied by the IRSST (#3010). In relatively uncontaminated
atmospheres, where the fibre concentration is much lower than 0.1 fibres/mL, use
larger sampling volumes (3000 to 10000L) in order to obtain quantifiable
densities.
The method applies to the counting of all fibres whose refractive index is
compatible with the mounting solution.
The minimum reported value is 25 fibres/mm².
Characterization of the fibres in bulk samples or in deposited dusts is done
using method 244-2. An analysis using a transmission electron microscopy (TEM)
method may be required for some materials containing fine asbestos fibres, for
example floor tiles.
Asbestos, Crocidolite
12001-28-4
0,2 f/cc
1 f/cc
C1
EM
Cassette with conductive extension and
mixed cellulose ester filter, Environmental
Express CS250080
918 MCE filter-25
0,5-16 PCM
400 IRSST
243-1
Open cassette sampling. A flow rate not exceeding 2.5 L/min is recommended
for determining an average concentration. Supply at least 2 blanks per series of
samples or 10% of sample total, whichever is highest. Send the samples in a
cardboard box supplied by the IRSST (#3010). In relatively uncontaminated
atmospheres, where the fibre concentration is much lower than 0.1 fibres/mL, use
larger sampling volumes (3000 to 10000L) in order to obtain quantifiable
densities.
The method applies to the counting of all fibres whose refractive index is
compatible with the mounting solution.
The minimum reported value is 25 fibres/mm².
Characterization of the fibres in bulk samples or in deposited dusts is done
using method 244-2. An analysis using a transmission electron microscopy (TEM)
method may be required for some materials containing fine asbestos fibres, for
example floor tiles.
Asbestos, Tremolite
14567-73-8
1 f/cc
5 f/cc
C1
EM
Cassette with conductive extension and
mixed cellulose ester filter, Environmental
Express CS250080
918 MCE filter-25
0,5-16 400 PCM
IRSST
243-1
Open cassette sampling. A flow rate not exceeding 2.5 L/min is recommended
for determining an average concentration. Supply at least 2 blanks per series of
samples or 10% of sample total, whichever is highest. Send the samples in a
cardboard box supplied by the IRSST (#3010). In relatively uncontaminated
atmospheres, where the fibre concentration is much lower than 0.1 fibres/mL, use
larger sampling volumes (3000 to 10000L) in order to obtain quantifiable
densities.
The method applies to the counting of all fibres whose refractive index is
compatible with the mounting solution.
The minimum reported value is 25 fibres/mm².
Characterization of the fibres in bulk samples or in deposited dusts is done
using method 244-2. An analysis using a transmission electron microscopy (TEM)
method may be required for some materials containing fine asbestos fibres, for
example floor tiles.