IOM Sampler
A Gold Standard for Personal Inhalable Particulate Sampling
Meets U.S. and international
standards
- ACGIH sampling criteria for inhalable particulate mass
- Preferred sampler for HSE Method MDHS 14/3
- NIOSH Method 5700 for particulate formaldehyde
- Australia standard for inhalable particulate
- Complies with MDHS 25/3 for organic isocyanates
- Complies with MDHS 6/3 for lead
Economical and reusable
Small and lightweight
- Plastic model weighs less than 2 oz (55 gm)
Efficient particulate sampling up to
100 µm
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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
Sampler and cassette available in stainless steel
- Provides ultimate moisture stability and autoclaving at
higher temperatures
Improved plastic material significantly reduces effects
of moisture
Stainless steel sampler and cassette available |
Performance Profile
 |
Sample Time |
Varies |
| Flow Rate |
2 L/min (personal sampling) |
| Construction |
Molded conductive plastic or stainless steel;
both are autoclavable |
| Sample Pump |
PCXR Series |
| Filters |
25-mm membrane or fibrous filter |
| Analysis |
Gravimetric |
| 50% Cut Point |
100 µm at 2 L/min inhalable fraction |
| Weight (without cassette) |
0.7 oz. (20 gm) |
| Size |
3.3 x 1.1 in (8.5 x 2.8 cm) |
IOM Product
Data Bulletin (PDF)
IOM
Operating Instructions (PDF)
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
Exploded View of the IOM Inhalable Dust Sampler
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:
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- 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.
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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, use with filter, 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 |
Cat. No. |
| 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 with cover for cassette.
Protects loaded filter cassette without IOM body during transportation (Shown
with stainless steel cassette, not included)
|
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225-72A |
Calibration Adapter, easy to use; simple and accurate
calibration
|
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225-73 |
25mm Filters
Each sample requires its own filter. |
Pore size |
Quantity |
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)
IOM FAQs
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.
This page was last modified March 18, 2008
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