Cooper Environmental Services LLC 

 10180 SW Nimbus Avenue Suite J6 

Portland, OR 97223 

503-670-9215 Fax 503-624-2120 

www.cooperenvironmental.com

 QAGTM 820 

 Quantitative Aerosol Generator (QAG) 

Key Features 

• Quantitative aerosol Traceable to NIST Standards 

• Simultaneous for one or more elements 

• Wide range: ng/dscm to mg/dscm

• Automatic mass loss reporting 

• Single operator with minimal input requirements 

The QAGTM creates an aerosol of know concentration by ultrasonically 

nebulizing a solution. The resulting droplets are carried out of 

generation area to a drying chamber where they are dried to salt 

particles. Depending on the application for the salt particles the size 

can be varied to a number mean between 0.1 and 2 μm in diameter. 

The aerosol exiting the drying chamber contains known concentrations 

of analyte elements calculated from the QAG’s input parameters. This 

reference aerosol produced by the QAG is process traceable to NIST 

standards and can be used to challenge and evaluate the accuracy, 

precision and linearity of measurement methods such as the Xact 

series monitors during certification and RATA. 

Approved by US EPA for Multi-Metal CEMS Audits 

and Certifications 

Stability has been demonstrated through repeated use in the laboratory and in the field for over five years. The 

QAG can be operated by one user with minimal parameter inputs and control. The QAG may also be potentially 

applicable to other inorganic analytes including most hazardous elements in stack and fugitive emissions as well as 

those present in the ambient environment. 

This instrument is the first quantitative aerosol generator to be approved by EPA for evaluating, validating and 

certifying continuous multi-metals CEMS used for compliance demonstration. The QAG greatly simplifies the 

certification and auditing of multi-metal CEMS and eliminates the need to compare multi-metal CEMS results to less 

precise and less accurate traditional multi-metal reference methods such as EPA Reference Method 29. 

CES 
Cooper Environmental Services LLC 

Applications 

Possible applications include evaluation, verification, audits and certification of metals and PM measurement 

systems. It is applicable to both metal and non-metal species as well as generic PM aerosols. 

Product Specifications 

Aerosol Generation Method Ultra-sonic nebulization 

Elements Hg, As, Pb, Cr, Cd, Co, Fe, Zn, Tl, Sb, Cu, Mn, Ni, V, Se, Ba, Br, Sr, Pd, Ag and more... 

Aerosol Concentration Range ng/dscm to mg/dscm 

Can spike flows Up to 1000 lpm 

Calibration Period Most components require recalibration at least annually 

Balance calibration check frequency Daily 

Percent Relative Difference 5% 

Linearity Correlation coefficient greater than 0.99 

Size and Weight 3’ (W) x 2’ (D)x 5’ (H), 160 lbs assembled 

Range of Operating Temperatures 50 to 90 oF 

Power Requirements1 120VAC/ 60 Hz, two- 20 amp circuits (220 VAC/60Hz with optional power converter) 

Inputs/Outputs All mass data available through RS232 port 

Options Particulate matter, Metals, an d non-metal species 

1. 1 circuit must be condition power to maintain factory warrantee or service agreement.