Series 690 ULTRA Passive Sampler for VOCs

Providing reliable collection of low ppb-level volatile organic compounds (VOCs) at ppm levels without the use of a pump.

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  • Overview
  • Features
  • Specifications
  • Applications
  • Support
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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, vapour intrusion, and near roadway, traffic, public health/asthma, and school zone studies.
  • Compare to canisters for EPA Method TO-15 (see data below) 
  • Passive alternative for EPA TO-17 — no pump required 
  • Choice of 4 sorbents for indoor and ambient air sampling, including semi-volatile organic compounds
    • Anasorb GCB1 
    • Tenax TA 
    • Chromosorb 106 
    • Charcoal (solvent extraction) 
  • Low ppb to ppt detection with highly sensitive thermal desorption
    • Rates 15 times higher than tube-style passive monitors for lower detection limits 
  • Slide cover for easy on/off 
  • Miniature lightweight sampler is easy to transport — no expensive shipping 
  • Validated sampling (uptake) rates
    • For indoor (low air velocity) uptake rates, see Technical Note: Indoor and Outdoor Sampling Rates for Environmental Sampling Using ULTRA Passive Samplers 
    • For outdoor uptake, see the Environmental Sampling Guide
  • 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 
  • Long-term sampling up to 30 days reduces temporal variability 
  • Optional Rate Reducer lowers sampling rates for long-term studies and higher concentration levels observed in soil gas sampling
  • Allows rapid deployment of multiple samplers for emergency stations 
  • Easy operation for community action programs
Sampling Media
Choose from 4 sorbents
Sampling Rate Dependent on compound of interest 
Sample Time Varies with sorbent, analyse, and detection limit
Sample Pump None required
Analysis Thermal desorption (TD) with gas chromatography/mass spectrometry (GC/MS) 


  • 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 
  • Odour profiling in fragrance, food, and flavour industries 
  • Product emissions 
  • Emergency response to oil spills and leaks 
  • Green Building certification 
  • Vapour intrusion 
  • School zone studies