Which Diffusive Monitor should I use?

Assay Technology offers more diffusive monitors for more chemicals than any other manufacturer.

 This is great news for those who want easy, accurate methods for personal monitoring. But, it can create a problem when trying to choose the correct monitor for sampling.

Choosing an Organic Vapor Monitor

  List of Monitors Item #

Assay Technology provides Three different monitors that can sample for  over 100 Organic Vapors. 


566:  Our most popular, versatile monitor.

521:  Our fastest sampler for short term or IAQ sampling.

546:  Our sampler with highest capacity.


While all three can work for almost every chemical, choosing which one will work best for you depends on the
  • Chemical
  • Sampling Conditions
  • Regulatory Limits

For Assistance choosing which is best for your situation: Organic Vapor Monitor Overview

ChemDisk II TraceAir® ChemDisk II
566 521 546


Click on the item number for a description.
  Acetic Acid


  Acrolein 592


Includes Formaldehyde and Acetaldehyde


Aldehydes, Very Fast Sampling Rate

Includes Glutaraldehyde and o-Phthalaldehyde

  Amines, Organic


  Ammonia 584
  Anesthetic Gases 574
  Ethylene Oxide 555
  Ethyl-2-Cyanoacrylate 595
  Hydrogen Peroxide 587
  Mercury Vapor 593
  Nitrogen Dioxide 594
  Nitrous Oxide 575

Organic Vapor Monitors


  521 TraceAir®








We have a list of Chemicals that can be collected using diffusive monitors.

Simply search for the chemical(s) you need to monitor for by name

 Search by Chemical Name

Or use our web site search engine above and enter the CAS No.

  Should/Can I use a badge?

Our Badges work for hundreds of chemicals for STEL, PEL, and IAQ monitoring. 

However, badges are not for every chemical nor every situation.  See our

Advantages/Disadvantages of diffusive monitors.