Published: Jan 1986
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Dust spots comparable to those obtained using the natural atmospheric aerosol have been obtained using an atomized and dried aqueous solution of carbon black. Tests which have been performed during the past two and a half years have indicated the technique is applicable for the standard range of dust spots (20% to 95%).
dust spot testing, HVAC filter testing
Raber, Robert R.
Research Manager, Farr Co., El Segundo, CA
Paper ID: STP42092S