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Air Monitoring
Solvent Desorption Tubes
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LpDNPH cartridges are air-sampling devices designated for sampling carbonyls (e.g. formaldehyde) in ambient, indoor, and industrial atmospheres. Carbonyls are trapped on a high purity silica adsorbent coated with 2,4-dinitrophenylhydrazine,where they are converted to hydrazone derivatives. The derivatives are eluted from the cartridge with acetonitrile and analyzed by HPLC.
Features & Benefits of LpDNPH cartridges:
High purity adsorbent for better accuracy and trace analysis.
High sensitivity, low background.
Low pressure drop, enables use at high sampling rates (1.5-2 L/min)
New packaging, for maximum sample integrity
Manufactured in controlled environment
Meet EPA, OSHA, NIOSH and ASTM specifications
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| LpDNPH Cartridge Specifications |
| Adsorbent: |
Chromatographic grade, high purity silica gel coated with:
DNPH: 2,4-dinitrophenylhydrazine
BPE: trans-1,2-bis(4-pyridyl)ethylene |
| Particle Size: |
150-250µm (60/100 mesh) |
| DNPH Loading: |
0.29% (1mg/cartridge)
0.86% (3mg/cartridge, H series)
0.21% (0.25mg/cartridge, ORBO™-DNPH) |
| Bed Weight: |
350mg (S10 series)
350mg (H10)
120mg (ORBO™-DNPH)
1g (H30)
10g (H300) |
| Capacity (total carbonyls): |
75µg (S10 series)
225µg (H10)
643µg (H30)
6400µg (H300)
18.8µg (ORBO™-DNPH) |
| Cartridge Length: |
7.4cm (S10)
3.8cm (S10x)
4.0cm (S10L)
4.0cm (Rezorian™)
9.0cm (ORBO™-DNPH) |
| Background: |
SPE Style Cartridges
<0.06µg formaldehyde
<0.10µg acetaldehyde
<0.30µg acetone |
ORBO™-DNPH
<0.025µg formaldehyde
<0.035µg acetaldehyde
<0.120µg acetone |
| Pressure Drop: |
<7pKa at 1.5L/min <20 inches water at 167mL/min
(<28 inches water/<2.1 inches mercury) |
| Agency Method Applications |
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US EPA TO-11A-Method for Determination of Formaldehyde in Ambient Air Using Adsorbent Cartridge Followed by High Performance Liquid Chromatography (HPLC) |
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US EPA IP-6A-Determination of Formaldehyde and Other Aldehydes in Indoor Air Using a Solid Sorbent Cartridge |
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US EPA-Technical Assistance Document for Sampling and Analysis of Ozone Precursors |
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ASTM D5197-Standard Test Method for Determination of Formaldehyde and Other Carbonyl Compounds in Air (Active Sampler Methodology |
*Patent pending
The BPE-DNPH cartridge is dual-layered and is comprised of silica gels impregnated with trans-1,2-
bis(4-pyridyl)ethylene (BPE) as the top layer and the bottom layer of DNPH coated silica gel. The BPE acts by retaining the ozone for analysis or scrubbing from your sample depending on your choice extraction method. The DNPH layer collects carbonyls for analysis. Not affected by high humidity.
Benefits
Dual ozone and aldehyde analysis
Integrated ozone scrubber
- No extra connections
- No leaking connections
Not affected by high humidity
Low Background
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| Technical Resources |
| Publication Title |
Type |
Size (kb) |
No. Pages |
| BPE-DNPH Cartridge |
Product profile |
465 |
2 |
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