UMEx 100 Passive Sampler for Formaldehyde
Designed for Easy Sampling of Formaldehyde.
SKU
UMEX100
The UMEx 100 Passive Sampler for formaldehyde was developed in collaboration with the National Institute of Working Life in Umea, Sweden. Constructed of tough polypropylene, the single-use UMEx 100 contains a tape treated with 2,4-dinitrophenylhydrazine (DNPH) for reliable collection of formaldehyde. Samplers are provided in individual aluminised pouches that can be used to transport the sampler to a laboratory after sampling.
For convenience and quality control assurance against contamination, each sampler incorporates a "blank/correction" section in addition to the active sampling section so there is no need to send extra samplers to the laboratory. The shelf-life date is printed on a label on the outside of each pouch for easy inventory management.
The UMEx 100 Sampler includes a clip for attachment to a worker’s collar for personal sampling or in an appropriate location for area sampling.
For more information on the UMEx 100 Passive Sampler For Formaldehyde, contact your local Air-Met office.
Accurate and reliable for formaldehyde collection
Sample integrity is assured
Accuracy exceeds OSHA standards
Uses popular 2,4-DNPH chemistry
Validated by OSHA and Swedish Institute
Economical and easy to use
No pump or training required
Low-cost sampler
Sample medium and blank/correction in one unit
Documented uptake rates
For 15-minute to 24-hour samples
For 7-day samples
Conforms to EU ISO 16000-4-2004
Meets specifications of OSHA Method 1007‡
Referenced in EPA IP-6C
Highly sensitive and specific analysis method
Small and unobtrusive
Simple-to-use "on/off" sliding cover
Safe
No glass or chemical liquids in the sampler
Samples ppb levels of formaldehyde
28.6 ml/min uptake rate enhances sensitivity for 15-minute, 8-hour, and 24-hour sampling
Versatile sampler
Workplace sampling from 15 minutes to 12 hours
Long-term indoor air sampling with validated rates for 24-hours and 7-day samples
‡ If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers (PDF) for field study information.
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Sampling Rate for Formaldehyde
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28.6 ml/min with a RSD of 7.6% at wind velocity of 5 to 100 cm/sec for 15 minutes to 24 hours
20.4 ml/min at wind velocities < 5 cm/sec for 1 to 7 days
See the More Information tab for UMEx 100 sampling rates for other aldehydes.
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| Detection Principle | Formation of stable DNPH-hydrazone in the presence of formaldehyde |
| Validation Range | 0.06 to 3.0 ppm |
| Lower Detection Limits |
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)
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| Shelf-life | 12-mos from date of manufacture at < 39.2°F ([4°C]) |
| Capacity | 29 µg/sample |
| Analysis | Solvent extraction and analysis by HPLC (high-performance liquid chromatography) 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 3 weeks
Do not store with food.
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| 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.
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| Wind Effects | No effect from 5 to 100 cm/sec |
| Interferences‡ |
Large amounts of carbonyl compounds may reduce the uptake of formaldehyde.
Use in ozone levels < 0.5 ppm.
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| Dimensions | 3.4 x 1.1 x .35 in (8.6 x 2.8 x .89 cm) |
| Weight | 0.38 oz (10.8 gm) |
- Formaldehyde sampling/collection
- For personal or area air sampling
- Indoor air sampling
- Workplace environmental sampling
