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UMEx 100 Passive Sampler for Formaldehyde, 25Pk

Part Number:

500-100A

Cold storage required. Shipping restrictions may apply.
Limited Shelf Life
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Overview
UMEx 100 Passive Sampler for formaldehyde; detection range from 5 ppb to 5 ppm; 15-minute to 24-hour samples and 7-day samples (sampling periods between 24 hours and 7 days have not been evaluated); single use only. Meets OSHA Method 1007 specifications.
The convenient UMEx 100 Passive Sampler features sensitive method-validated chemistry for detection of low levels of formaldehyde. The single-use UMEx 100 contains a tape treated with 2,4-dinitrophenylhydrazine (DNPH) for reliable collection. Sampling rates are validated from 15 minutes to 24 hours or 7 days. Analysis is performed by high-performance liquid chromatography (HPLC).
Attributes
Cold Storage RecommendedYes
Limited Shelf LifeYes
TypeSolvent Extraction
Chemical HazardFormaldehyde, Other Aldehydes
SorbentTreated Tape
Validation LevelCalculated, Full, OSHA, Partial
 

Performance Profile

Sampling Rate for Formaldehyde

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.

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)
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.
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 5 to 100 cm/sec
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)
Note:If sampling in an atmosphere containing formalin, see Sampling Formaldehyde from Formalin Using Passive Samplers for field study information.

 

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