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ULTRA Passive Sampler for ppb-Level Organic Vapors


Orderable Items The ULTRA® Passive Sampler offers a choice of four sorbents for indoor and ambient air sampling. The ULTRA samples by diffusion and provides low ppb to ppt detection of compounds, including semi-volatile organic compounds (SVOCs). Use the ULTRA as an alternative to stainless steel canisters for green building certification, fenceline monitoring, product emissions, vapor intrusion, and near roadway, traffic, public health/asthma, and school zone studies.



 
  • Compare to canisters for EPA Method TO-15
    • No cleaning or certification costs
    • Lower purchase price
    • No expensive shipping

  • Passive alternative to EPA TO-17 — no pump required

  • Choose from 5 sorbents for indoor and ambient air sampling (including SVOCs)
    • Anasorb GCB1
    • Tenax TA
    • Chromosorb 106
    • Carbopack X
    • Charcoal (solvent extraction)

  • Sub-ppb level detection, highly sensitive thermal desorption
    • Rates 15 times higher than tube-style passive monitors for lower detection limits

  • Small, lightweight, and easy to transport

  • Validated sampling (uptake) rates
  • Built-in blank/correction sorbent section available

  • Sample integrity
    • Sonically welded housing seals the sampler
    • Manufactured in an ultra-clean environment
    • Extensive cleaning and QC procedures

  • Allows rapid deployment of multiple samplers for emergency stations

  • Easy operation for community action programs




 
Applications
  • Public health/asthma studies
  • Near roadway air quality studies
  • Volatiles from soil gas, biological sources, and water
  • Traffic studies
  • Fenceline monitoring
  • Monitoring pollution migration from industrial processes
  • Odor profiling in fragrance, food, and flavor industries
  • Product emissions
  • Emergency response to oil spills and leaks
  • Green Building certification
  • Vapor intrusion
  • School zone studies


 


 


 


 


 

Performance Profile

Sampling Media Choose from 5 sorbents
Sampling Rate Dependent on compound of interest (validated rates available)
Sample Time Varies with sorbent, analyte, and detection limit
Sample Pump None required
Analysis Thermal desorption (TD) with gas chromatography/mass spectrometry (GC/MS)


 


 


 


 


 
Callouts Ultra Front View

Callouts Ultra Rear View

SKC introduces ULTRA Passive Samplers — the creative evolution of indoor and ambient air sampling. The patented* ULTRA samples by diffusion and provides low ppb to ppt detection of compounds, including semi-volatile organic compounds (SVOCs). ULTRA Passive Samplers are an economical alternative to stainless steel canisters for EPA TO-15 sampling and show excellent sampling correlation in side-by-side studies with canisters. Operation is as easy as sliding the cover open to start sampling and closing it to stop sampling. ULTRA Passive Samplers are also a convenient alternative to and have a higher uptake rate than thermal desorption tubes

* U.S. Patent No. 6,607,581

Side-by-side performance studies show excellent sampling correlations between ULTRA samplers and stainless steel canisters. Compare and see that ULTRA passive samplers are the economical, convenient alternative to stainless steel canisters.

  ULTRA Passive Samplers Canisters
Methods EPA TO-15, TO-17, IP-1B EPA TO-14, TO-15, IP-1B
Economy
  • Lower price, no cleaning, low shipping cost
  • Built-in blank correction
Higher price, requires cleaning, high shipping cost
Convenience Deploy in seconds Take several minutes to set up, require training
Handling Small, lightweight — transport and locate anywhere Larger size and weigth limit location and transport options
Sample Time 4 hours to 30 days, depending on sorbent 24 hours maximum
Excellent sampling correlation in side-by-side studies with canisters

 

Comparison of ULTRA Passive Sampler and Canisters
Side-by-side studies were performed using ULTRA Passive Samplers with Anasorb GCB1 sorbent and stainless steel canisters. Concentration results are reported below.

Compound
ULTRA (µg/m3)
Canister
(µg/m3)
Benzene
4.2
4.5
2.1
2.0
1.9
1.6
6.67
6.8
1.58
1.5
Compound
ULTRA (µg/m3)
Canister
(µg/m3)
Perchloroethylene
1.1
1.6
2.3
2.2
32.9
30.0
1.37
2.0
2.85
2.6
Compound
ULTRA (µg/m3)
Canister
(µg/m3)
m,p-Xylene
21.2
19.2
5.52
5.6
34.1
36.7
3.7
2.51
5.7
5.1
Compound
ULTRA (µg/m3)
Canister
(µg/m3)
o-Xylene
7.55
7.9
1.16
0.93
1.96
1.9
8.3
6.2
13.3
11.0
Compound
ULTRA (µg/m3)
Canister
(µg/m3)
Toluene
30.0
26.0
20.3
19.0
44.0
46.0
10.8
8.8
6.1
3.8

 


Sampling Rates and MRLs* for ULTRA with Charcoal (Solvent Desorption)

Compound
Sampling Rate
(ml/min)

Sampling Period/
Upper Limit
(days)

Maximum
Recommended
Concentration
(ppb)
Indoor MRL*
(µg/m 3 )
Outdoor MRL*
(µg/m 3 )
Indoor
Outdoor
1 Day
7 Day
1 Day
7 Day
Benzene
10.70
16.0
30
113
3.98
0.43
1.24
0.29
Ethyl benzene
9.02
12.9
30
85
1.10
0.26
0.77
0.18
Toluene
8.90
14.5
30
500
1.12
0.26
0.69
0.16
Methyl tert-butyl ether
9.84
13.6
30
60
2.0
0.456
1.45
0.34
o-Xylene
8.11
11.9
30
80
1.22
0.29
0.83
0.195
* MRL — minimum reporting level: These can vary with each laboratory; check with the laboratory.
Indoor — low velocity conditions (< 5 cm/sec)
Outdoor — 5 to 200 cm/sec, low air velocities, typically found in indoor air, result in lower uptake rates in passive samplers

 

 

Compare ULTRA Samplers to Passive TD Tubes

Sampler ULTRA Passive Sampler Passive TD Tubes
Sampling Rate for Benzene 16.0 ml/min 0.67 ml/min
Sampling Time 8 to 24 hours 14 days
Desorption Transfer to thermal desorption tube Direct insertion into thermal desorber
Recommended Applications Indoor and ambient air monitoring, vapor intrusion Compliance fenceline monitoring of petroleum refineries according to EPA 325



 


 


 


 


ULTRA Downloads

See the Passive Sampling Guide for sampling rates.

ULTRA Selection Guide (PDF)

List of Laboratories for Analyzing ULTRA Passive Samplers

Product Information (PDF)

ULTRA Product Data Bulletin

Low Velocity Sampling Rates

Table of Sampling Rates (Ml/min) for the Solvent Analyte Mixture Using SKC ULTRA Samplers Containing Chromosorb 106

Measuring Sub-ppb Levels of VOCs in Indoor Air: Performance Comparison of Diffusive Badges and Canisters

TO-17 Determination of Volatile Organic Compounds in Ambient or Indoor Air

Vapor Intrusion Sampling Options: Performance Data for Canisters, Badges, and Sorbent Tubes for VOCs

Monitoring Indoor Air and Workplace VOCs with Diffusive Samplers

Long-term Indoor/Ambient Air Validation Report

Performance of SKC Ultra Passive Samplers
OSHA Salt Lake Technical Center

 

PowerPoint Shows

AIHce 2011 Presentation: Field Evaluation of Diffusive Samplers for Indoor Air VOC Measurements
Download PPS file

 

Operating Instructions (PDF)

Operating Instructions — ULTRA (solvent desorbed badges with blank)

Operating Instructions — ULTRA (solvent desorbed badges without blank)

Operating Instructions — ULTRA (thermal desorbed badges with blank)

Operating Instructions — ULTRA (thermal desorbed badges without blank)

Operating Instructions — Rate Reducer for ULTRA 690-300

Operating Instructions — User-filled badges ULTRA 690-200

 

Analysis Instructions

Analysis Instructions — ULTRA (all solvent desorbed badges)

Analysis Instructions — ULTRA (all thermal desorbed badges)