IOM Sampler
A Gold Standard for Personal Inhalable PM Sampling
- Meets U.S. and international standards
- ACGIH sampling criteria for inhalable particulate mass
- ISO/CEN health-related fraction of bioaerosols
- Preferred sampler for HSE Method MDHS 14/3
- NIOSH Method 5700 for particulate formaldehyde
- Australian standard for inhalable particulate
- Complies with MDHS 25/3 for organic isocyanates (stainless steel model)
- Complies with MDHS 6/3 for lead (with single-hole head accessory)
- OSHA equivalent method for particulates not otherwise regulated‡
‡Reference:
OSHA letter November 8, 2011
- Economical and reusable
- Small and lightweight
- Plastic model weighs less than 2 ounces (55 grams)
- Ideal for sampling vapor-phase isocyanates
- Efficient particulate sampling up to 100 µm
- Maintains sample integrity
- Removable 25-mm cassette system eliminates filter handling
- Cassette and filter are weighed as a single unit to include all collected particles in analysis
- Stainless steel cassettes available for chemical analysis
- Autoclavable for bioaerosol sampling
IOM
Product Data Bulletin (PDF)
IOM
Operating Instructions (PDF)
Certificate
of Conformity to EN481 (JPG)
Foam
Insert Testing to BS EN13205 Certificate of Conformity to EN481
(JPG)
Performance Profile
| Flow Rate |
2 L/min (personal sampling) |
| 50% Cut-point |
100 µm at 2 L/min inhalable fraction
4.0 µm at 2 L/min respirable (with multiDust) |
| Material |
Molded autoclavable conductive plastic (polypropylene) or stainless steel |
| Maximum Operating Temperature |
Plastic IOM and cassette: 212 F (100 C) with no pressure †
Stainless steel IOM and cassette: 392 F (200 C) suitable
for autoclaving and solvent washing |
| Filters |
25-mm membrane or fibrous filter |
| Tubing |
1/4-inch ID |
Weight
(plastic model with cassette) |
< 2 oz (55 gm) |
| Dimensions |
3.3 x 1.1 in (8.5 x 2.8 cm) |
| Analysis |
Gravimetric or chemical (stainless steel model) |
† The plastic IOM
is not suitable for autoclaving or ethylene oxide sterilization.
IOM Sampler
The patented* IOM Sampler,
developed by J. H. Vincent and D. Mark at the Institute of Occupational
Medicine (IOM) in Scotland,
meets the ACGIH sampling criteria for inhalable particulate mass. The
IOM Personal Inhalable Sampler is a conductive plastic sampling head
that houses a reusable 25-mm filter cassette with specified filter
for the collection of inhalable airborne particles. When attached to
a personal sampling pump operating at 2 L/min and clipped near a worker’s
breathing zone, the IOM effectively traps particles up to 100 µm
in aerodynamic diameter and closely simulates the manner in which airborne
workplace particles are inhaled through the nose and mouth. Because
both the cassette and the filter are pre and post-weighed as a single
unit, all particles collected (even larger ones) are included in the
analysis. The cassette can be cleaned, reloaded with a new filter,
and reused.
* U.S. Patent No. 4,675,034
Configuration for conductive plastic IOM Sampler and
cassette - Cat. No. 225-70A and plastic IOM with stainlesss
steel cassette - Cat. No. 225-79A
Configuration for stainless steel IOM Sampler and cassette
- Cat. No. 225-76A
Particle Size-selective Dust Sampling
The
hazard potential of airborne dust, solid particles, or droplets is
dependent on the mass concentration as well as the particle size. Particle
size determines the deposition site within the respiratory tract and
the subsequent health effect. Therefore, the American Conference of
Governmental Industrial Hygienists (ACGIH®)
has recommended that particle-size selective Threshold Limit Values
(TLV®s)
be developed for inhalation hazards in the workplace.
Particle-size selective TLVs consider two points:
- The size-fraction most closely associated with the specific health effect
- The mass concentration within that size fraction which should represent
the TLV
The ACGIH recommends that particle-size selective TLVs be expressed in three
forms:
 |
- Inhalable Particulate Mass
- Dust particles having a 50% cut-point of 100 µm. These dust
particles are hazardous when deposited anywhere in the respiratory
tract.
- Thoracic Particulate Mass
- Dust particles having a 50% cut-point of 10 µm. These dust particles
are hazardous when deposited anywhere in the lung airways and gas-exchange
regions.
- Respirable Particulate Mass
- Dust particles having a 50% cut-point of 4 µm. These dust particles
are hazardous when deposited anywhere in the gas-exchange regions.
|
Since inhalable particulate mass is defined as those materials that are hazardous when deposited anywhere in the respiratory tract, including the nose and mouth, a sampler designed for the collection of inhalable dust should have a median cut-point of 100 µm.
Ordering Information
| IOM Samplers, 25-mm filter is required, select from below |
Cat. No. |
| IOM Sampler and cassette, in
conductive plastic, with transport clip and cover |
 |
225-70A |
| IOM Sampler and cassette, in
stainless steel, with transport clip and cover |
 |
225-76A |
| IOM Sampler, in conductive plastic, with stainless
steel cassette, transport clip, and cover |
225-79A |
| PCXR4 Single 115 V Pump Kit
with IOM, does not
include cassette holder |
224-PCXR4PK |
| Accessories |
| Cassette assembly, in conductive plastic,
with transport clip and cover |
 |
225-71A |
| Cassette assembly, in stainless steel, with transport
clip and cover |
 |
225-75A |
Transport Clip and Cover, for
cassette, protects loaded filter cassette without IOM body during
transportation (shown
with stainless steel cassette, not included)
|
 |
225-72A |
IOM Calibration Adapter, easy to use; simple and accurate
calibration
|
|
391-01 |
| Single Hole Lead Head, for sampling lead to MDHS 6 |
 |
225-52 |
| MultiDust Foam |
MultiDust Foam Discs for Respirable, optimized
for 4-µm median cut-point; certificate containing
test data supplied with each batch,
pk/10
Use with filters listed below.
|
|
25-mm Filters for IOM Sampler
Each sample requires its own filter. |
Pore Size |
Qty. |
Cat. No. |
| Polyvinyl Chloride (PVC) |
5.0 µm |
100 |
225-8-04 |
| Glass Fiber |
1.0 µm |
500 |
225-702 |
| Mixed Cellulose Ester (MCE) |
0.8 µm |
100 |
225-1930 |
| Polycarbonate |
0.8 µm |
100 |
225-1601 |
| Gelatin |
|
50 |
225-9551 |
IOM Product
Data Bulletin (PDF)
IOM
Operating Instructions (PDF)
Certificate
of Conformity to EN481 (JPG)
Foam
Insert Testing to BS EN13205 Certificate of Conformity to EN481 (JPG)
References
Mark, D. and Vincent, J. H., "A New Personal Sampler for Airborne Total
Dust in Workplaces," Ann. Occup. Hyg. Vol. 30,1986, pp. 89-102
ACGIH Technical Committee on Air Sampling Procedures: Particle Size-selective
Sampling in the Workplace, ACGIH, Cincinnati, Ohio, 1984
Kenny, L.C., Bowry, A., Crook, B., and Stancliffe, J.D., “Field Testing
of a Personal Size-selective Bioaerosol Sampler,” American Occupational
Hygiene, Vol. 43, No. 6, 1999, pp. 393-404
Kenny, L.C., Stancliffe, J.D., Crook, B., Staff S., Griffiths, W.D., Stewart,
I.W., and Futter, S.J., “The Adaptation of Existing Personal Inhalable
Aerosol Samplers for Bioaerosol Sampling,” American Industrial Hygiene
Association Journal, Vol. 59, 1998, pp. 831-841
Kenny, L.C., Chung, K.Y.K., and Dilworth, M., “Applications of Low-cost
Multifraction Aerosol Samplers - Final Report,” IR/EXM/99/06, Health
and Safety Laboratory, U.K., 1999
Kenny, L.C., Chung, K.Y.K., Dilworth, M., Hammond, C., Jones, J. Wynn, Shreeve,
Z., and Winton, J., “Applications of Low-cost Dual-fraction Dust Samplers,” Ann.
Occup. Hyg., Vol. 45, No. 1, 2001, pp. 35-42
This page was last modified January 16, 2012
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