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UMEX 100 Passive Sampler
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| * | Sampling periods between 24 hours and 7 days have not been evaluated. |
| ‡ | If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers (PDF) for field study information. |
UMEX Downloads
UMEX 100 Research Report (PDF)
UMEX 100 Operating Instructions (PDF)
Tech. Note: Sampling Formaldehyde from Formalin Using Passive Samplers (PDF)
EPA IP-6 Method Update: Determination of Formaldehyde and Other Aldehydes in Indoor Air (PDF)
List of Laboratories for Analyzing 500-100 UMEX 100 Passive Samplers
For a listing of Parameters for Laboratory Analysis, see 500-100 UMEX Sampler Parameters.
UMEX 100 Passive Sampler for Formaldehyde
Using the UMEX 100 Passive
Sampler
Sampling with the UMEX 100 Passive Sampler for
formaldehyde is easy and requires no pump or training. Simply
remove the
sampler from the pouch, record sampling information, and
slide the cover to the "on" position. Clip the
sampler on a worker for personal sampling up to eight hours
or in an appropriate location for area sampling up to 24
hours or for 7 days (sample periods between 24 hours and
7 days have not been evaluated). When sampling is complete,
simply slide the cover to the "off" position, place
the sampler back in the pouch immediately, and seal. Send
the sampler to an accredited laboratory for analysis by highperformance
liquid chromatography. The UMEX 100 sampler is
designed for single use only. Do not reuse UMEX samplers.
UMEX 100 for Other Aldehydes
UMEX 100 can be used to sample other aldehydes. See the Passive
Sampling Guide for UMEX 100 sampling rates for other
aldehydes or check below for calculated sampling rates.
Compound |
(ml/min) |
| Acetaldehyde | 23.1 |
| Benzaldehyde | 14.1 |
| Butyraldehyde | 16.5 |
14.3 |
UMEX 400 for Amines
UMEX 400 contains a tape treated with 1-Naphthylisothiocyanate
(NITC) for the passive collection and analysis of ppm-level aliphatic
amines such as methyl amine, dimethyl amine, isopropyl amine, ally-amine,
and n-butyl amine. Analysis is by high-performance liquid chromatography
with UV detection (HPLC-UV). See UMEX 400
for Amines for more information.
UMEX 200 for Sulfur Dioxide and/or Nitrogen Dioxide
UMEX 200 uses tape treated with triethanolamine (TEA)
for the passive collection and analysis of sulfur dioxide and/or
nitrogen dioxide.
Analysis is by ion chromatography (IC) with conductivity detection.
See UMEX 200 for Sulfur Dioxide and/or
Nitrogen Dioxide for more information.
Performance Profile
| Sampling Rate for Formaldehyde | 28.6 ml/min with an RSD of 18% for 15 min to 8 hr or 24 hr 20.4 ml/min for 7 days* |
| Concentration Range | 5 ppb to 5 ppm |
| Lower Detection Limits | 15 min: 200 ppb (.24 mg/m3) 8 hr: 5 ppb (.006 mg/m3) 24 hr: 2 ppb (.002 mg/m3) 7 days: 0.2 ppb (.0002 mg/m3)* |
| Shelf-life | 12 mos from date of manufacture at < 39.2 F (4 C) |
| Capacity | 29 µg/sample |
| Analysis | High-performance liquid chromatography (HPLC) with UV detection |
| Accuracy | ± 25%, exceeds OSHA requirements |
| Storage | Before use: < 39.2 F (4 C) After use: < 39.2 F (4 C) and analyze within three weeks Do not store with food. |
| Temperature Effects | No effect on sampling rate between 10 and 30 C |
| Humidity Effects | No effect from 10 to 80% relative humidity; do not use below 10% RH |
| Wind Effects | No effect from 0.05 to 1.0 m/s; good correlation at 0.02 m/s |
| Interferences‡ | Large amounts of carbonyl compounds may reduce the uptake
of formaldehyde Use in ozone levels < 0.5 ppm |
| Dimensions | 3.4 x 1.1 x .35 ins (8.6 x 2.8 x .89 cm) |
| Weight | 0.38 oz (10.8 gm) |
| * | Sampling periods between 24 hours and 7 days have not been evaluated. |
| ‡. | If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers for field study information. |
Sampling Rate for Formaldehyde |
28.6 ml/min with a RSD of 18% (for 15-min
to 8-hrs or 24-hrs*) See the Passive Sampling Guide for UMEX 100 sampling rates for other aldehydes. |
Detection Principle |
Formation of stable DNPH (2,4 dinitrophenylhydrazine) in the presence of formaldehyde |
Concentration Range |
5 ppb to 5 ppm |
| 15-min: 200 ppb (0.24 mg/m3) 8-hrs: 5 ppb (0.006 mg/m3) 24-hrs*: 2 ppb (0.002 mg/m3) 7 days* : 0.2 ppb (0.0002 mg/m3) |
|
Shelf-life |
12-mo from date of manufacture at < 39.2F (4C) |
Capacity |
29 µg/sample |
Analysis |
Desorption of hydrazine and analysis by high-performance liquid chromatography (HPLC) with UV detection |
Accuracy |
± 25%, exceeds OSHA requirements |
Storage |
Before use: < 39.2 F (4C) After use: < 39.2 F (4C) and analyze within three weeks Do not store with food. |
Temperature Effects |
No effect on sampling rate between 10 and 30 C |
Humidity Effects |
No effect from 10 to 80% relative humidity (RH) Do not use sampler below 10% RH. |
Wind Effects |
No effect from 0.05 to 1.0 m/s; good correlation at 0.02 m/s |
Interferences‡ |
Large amounts of carbonyl
compounds may reduce the uptake of formaldehyde. Use in ozone levels < 0.5 ppm. |
Dimensions |
3.4 x 1.1 x .35 in (8.6 x 2.8 x .89 cm) |
Weight |
0.38 oz (10.8 gm) |
| * | Sampling periods between 24 hours and 7 days have not been evaluated. |
| Note:. | If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers for field study information. |
UMEX 100 Research Report (PDF)
UMEX 100 Operating Instructions (PDF)
Tech. Note: Sampling Formaldehyde from Formalin Using Passive Samplers (PDF)
EPA IP-6 Method Update: Determination of Formaldehyde and Other Aldehydes in Indoor Air (PDF)
List of Laboratories for Analyzing 500-100 UMEX 100 Passive Samplers
For a listing of Parameters for Laboratory Analysis, see 500-100 UMEX Sampler Parameters.
Ordering Information
| Description | Qty. | |
UMEX 100 Passive Sampler for Formaldehyde‡ and other Aldehydes, individually packaged in aluminized pouch Designed for single use only. DO NOT reuse UMEX samplers.Limited shelf-life; storage required at < 39.2F (4C). Do not store with food. |
10 | 500-100 |
| Treated Tape, for QC purposes only | pk/50 | P20084 |
| ‡. | If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers for field study information. |
References
Levin, J.O. and Lindahl, R., "Diffusive Air Sampling of Reactive Compounds
- A Review," Analyst, Vol. 119, January 1994, pp. 79-83.
Levin, J.O., Lindahl, R., and Andersson, K., "Monitoring of Parts-per-billion
Levels of Formaldehyde using a Diffusive Sampler," APCA Journal, Vol.
39, No. 1, January 1989, pp. 44-47.
Levin, J.O., Lindahl, R., Andersson, K., and Hallgren, C., "High-Performance
Liquid Chromatography Determination of Diethylamine in Air Using Diffusive
Sampling Thiourea Formation," Chemosphere, Vol.18, Nos. 11-12, pp. 2121-2129.
Levin, J., Lindahl, R., and Andersson, K., "High-performance Liquid Chromatographic
Determination of Formaldehyde in Air in the ppb and ppm Range Using Diffusive
Sampling and Hydrazone Formation," National Institute of Occupational
Health, Research Department in Umea, Analytical Chemistry Division, P.B.
6104,
S-90006 Umea, Sweden Environmental Technical Letter 9, 1988, pp. 1423-1430.
Levin, J.O., Lindahl, R., and Andersson, K., "A Passive Sampler for Formaldehyde
in Air Using 2, 4-Dinitrophenylhydrazine-coated Glass Fiber Filters," Environmental
Science & Technology, Vol 20, No. 12, 1986, pp. 1273-1276.
Levin, J.O., Lindahl, R., Heeremans, C., and van Oosten, K., "Certification
of Reference Materials Related to the Monitoring of Aldehydes in Air by Derivatization
with 2,4-Dinitrophenylhydrazine," Analyst, Vol. 121, September 1996,
pp. 1273-278.
Lindahl, R., Levin, J.O., "Laboratory Validation of a Diffusive Sampler for
the Determination of Glutaraldehyde in Air," Journal of Chromatography
A, 710, 1995, pp. 175-180.
Lindahl, R., Levin, J.O., and Jarvholm, B., "Self-assessment as a Method for
Determination of Exposure to Formaldehyde," Indoor Air, Vol. 4, 1999,
pp. 453-458.
Lindahl, R., Levin, J.O., and Martensson, M., "Validation of a Diffusive Sampler
for the Determination of Acetaldehyde in Air," Analyst, Vol. 121, September
1996, pp. 1177-1181.
Pengelly, I., Groves, J. A., Levin, J.O., Lindahl, R., "An Investigation
into the Differences in Composition of Formaldehyde Atmospheres Generated
from Different
Source Material and the Consequences for Diffusive Sampling," Applied
Occupational Hygiene Vol. 40, No. 5, 1996, pp. 555-567.
OSHA Method 1007 Formaldehyde (Diffusive Samplers), May 2005.
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