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Passive Samplers for Organic Vapors
A cross-sectional view of the SKC 575 Series Passive Sampler. A diffusion barrier maintains sample uptake by molecular diffusion independent of wind velocity. The sorbent is chosen to best collect the chemical hazards of interest. 575 Series Passive Sampler Analysis Instructions (PDF) List of Laboratories for Analyzing 575 Passive Samplers SKC Passive SamplersSKC passive samplers are small "badges" that collect organic vapors without the use of a pump. Individual chemicals simply diffuse from the atmosphere into the sampler at a fixed rate. SKC has scientifically validated the sampling rate of the 575 Series passive samplers along with other critical sampling parameters to provide you with documented proof of reliability.
SKC 575 Series Passive Samplers are validated for a full 8 hours, that's TWICE the
limit value! This assures the integrity of the sampler, so you only
need ONE badge to get a true 8-hour TWA!
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| 1. Remove sampler from pouch. |  |
| 2. Record start time, remove cap, and attach to a worker or at a location. |  |
| 3. After sampling, cap sampler and record stop time. Send the sampler to an accredited laboratory for analysis. |  |
For compliance sampling, it is recommended that only passive samplers with full or bi-level validation be used. Passive samplers with lower levels of validation may be used only if verified by validated sorbent sample tube methods.
Validation
Passive sampling is quite different from active sampling with sorbent tubes. With this fact in mind, NIOSH established validation protocols for evaluating the performance of passive samplers. 1 Protocol validation was developed so that manufacturers could produce passive samplers that reliably assess airborne levels.Validation Levels
- Full
- Passive monitor has passed all NIOSH protocol validation requirements
listed under partial validation, plus a factorial study that includes
interfering compounds. This is the most rigorous test possible
and includes all parameters that can affect sampling accuracy (formerly
referred to as Level 5).
- Bi-Level
- A key member of an homologous series has passed Full and all
other members have passed Partial. The validity of this has been
shown by Guild et. al. 2 (formerly
referred to as Level 5B).
- Partial
- Passive monitor has passed NIOSH protocol requirements for: sampling
rate, desorption efficiency, humidity effects, reverse diffusion,
and storage stability test for reactive compounds whose stability
is suspect (formerly referred to as Level 4).
- Calculated
- Uptake rates calculated from the equation D x (A/L) where D is
the diffusion coefficient calculated from the Hierschfelder Equation
and A/L is a geometric constant of the sampler verified through
comparison of uptake rates from full validations
About OSHA testing
After extensive testing on the sampling rate variations among diffusive samplers, OSHA has released the following methods that specify diffusive (passive) samplers including SKC Cat. No. 575-002:
- Toluene — Method 111 (1998)
- Tetrachloroethylene and Trichloroethylene — Method 1001 (1999)
- Xylenes and Ethylbenzene — Method 1002 (1999)
- 2-Butanone (MEK) and Hexone (MIBK) — Method 1004 (2000)
- Benzene — Method 1005 (2002)
- Butyl acetates — Method 1009 (2007)
Passive Sampler Ordering Information
Complete instructions are included with each sampler package
| Description | Sorbent (Amount) |
Qty. | Cat. No. |
| Passive Sampler for Organic Vapor | Charcoal (350 mg) |
5 | 575-001 |
| 25 | 575-001A | ||
| 100 | 575-001B | ||
| 500 | 575-001C | ||
| Passive Sampler for Organic Vapor | (500 mg) |
5 | 575-002 |
| 25 | 575-002A | ||
| 100 | 575-002B | ||
| 500 | |||
| Passive Sampler for Organic Vapor | (300 mg) |
5 | 575-003 |
| Passive Sampler for Ethylene Oxide | (500 mg) |
5 | 575-005 |
| 25 | |||
| 100 |
See the Passive Sampling Guide for sampling rates
575 Series Passive Sampler
Analysis Instructions (PDF)
Passive Sampler Research Reports
Passive Samplers Meet CEN 838 Diffusive Sampler
Evaluation Protocols
Contact
me about the 575 Series Passive Samplers
List of Laboratories for Analyzing
575 Passive Samplers
AIHCE 2002 Presentations
- Abstract
"Using Diffusive Samplers for Monitoring for ppb Levels of Volatile Organic Compounds in Air" (PDF) - AIHCE 2002
- PowerPoint Presentation
"Using Diffusive Samplers for Monitoring for ppb Levels of Volatile Organic Compounds in Air" - AIHCE 2002
- Poster Presentation
Monitoring Volatile Organic Compounds Found in Indoor Air Using Diffusive Samplers Poster Session (Poster 348 PDF) AIHCE 2002
For a listing of laboratories in the U.S. and Canada that analyze Passive Samplers, see the 575 Series Passive Samplers Analytical Laboratories Reference List
Custom Passive Samplers Available
For specific applications, SKC will manufacture samplers to meet your specific requirements. Download the Custom Passive Sampler Order Form in PDF format. Complete the form and fax it to your SKC representative or contact your SKC representative or call the SKC Sales Department at 724-941-9701 for more information.Custom Passive Sampler Order Form (PDF Format)
References
- 1.
- Cassinelli, M.E., Hull, R.D., Crable, J.V. and Teass, A.W., "Diffusive
Sampling: An Alternative to Workplace Air Monitoring," A. Berlin, R.H. Brown
and K.J. Saunders (Royal Society of Chemistry, London) (eds.), NIOSH Protocol
for the Evaluation of Passive Monitors, 1987, pp 190-202.
- 2.
- Guild, L.V., Myrmel, K.H., Myers, G. and Dietrich, D.F., "Bi-Level Passive Monitor Validation: A Reliable Way of Assuring Sampling Accuracy for a Larger Number of Related Chemical Hazards" Appl. Occup. Environ. Hyg., Vol 7, No. 5, May 1992, pp. 310-317. Reprints available from SKC! Email your mailing address to SKC Inc at skcmktg@skcinc.com.
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This site was last modified May 9, 2008 © Copyright 1995-2008 SKC Inc |