Assay Technology - 521 Organic Vapor Sampler -TraceAir®



Allyl Alcohol



n-Butyl Acetate

Carbon Tetrachloride


n,n-Dimethyl Formamide




Vinyl Acetate

Vinylidine Chloride


Organic Solvent Panel

Hydrocarbons, Total



Complete List



521- Fast Sampling Rate Badge

521 - Fast Sampling Rate Monitors

The 521 is our fastest sampling rate badge.  There are covers on each side of the monitor that can be removed to double the sampling rate.  Even with only one cover removed the monitor samples approximately at 30 mL/min, depending on the chemical. 

Use this monitor for monitoring for chemicals with a low PEL (10 ppm or less), STEL monitoring or for Indoor Air Quality situations.

Note:  There are a few chemicals that have PELs at 10 or below but are too volatile to be reliably collected by this fast sampling diffusive monitor.

Assay Technology also manufactures two other Organic Vapor Monitors, 566 and 546.  For assistance in choosing which is best for your situation, use our Guide.


Associated Analytical Methods:  OSHA 7, NIOSH 1500, SIM OSHA 32 (Phenol), NIOSH 1550, NIOSH 1604


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Badges with Prepaid Analysis

X521-1 - Buy Now - 5 Monitors per box.  Includes the analysis of One chemical per monitor.  (Except Phenol.  See 521-4.)


X521-4 - Buy Now - 5 Monitors per box.  Includes the analysis of Four (4) chemicals or Phenol per monitor. 


X521-25 - Buy Now - 5 Monitors per box.  Includes the analysis for the Organic Solvent Panel at our AIHA-LAP, LLC Accredited lab.


W521-1, W521-4, W521-25

1 Monitor each


Why Prepay for the Analyses?

Badges w/o Analysis

N521-Buy Now - 10 Monitors per box.  For IH laboratories or customers that have their own preferred lab.


M521-Buy Now - Media only. 

7 per vial.  For IH laboratories.

List Pricing

Full Pricelist

Multiple Chemicals on One Badge

AT Labs goes to great lengths to allow customers to request many chemicals on the same sampling media.  However, not all chemicals collected on a 521/566/546 badge can be analyzed together. 

Click Here for List.