Project Overview

Residue Analysis - North America

A subsidiary of a Fortune 500 company, manufacturing fire suppression technology, requested chemical analysis of a black residue accumulating on commercial kitchen fire suppression spray nozzles (loaded with a mixture potassium acetate and potassium citrate, both white powders.) Scanning electron microscopy did not reveal potassium and infra-red spectroscopy (FTIR) revealed evidence of fatty acids used in cooking and amide (protein) bonds.


Joseph Sabol, PhD
Chemical Consultant
Racine, Wisconsin USA


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Details on 1) indoor air quality, 2) methane, 3) carbon dioxide, 4) misleading information, and 5) SARS-CoV-2 and COVID-19 Resources.