Research into the possibility of reusing fire-extinguishing powders and reducing laboratory waste during quality control

Abstract The study addresses the reutilization of fire-extinguishing powder in the context of circular economy principles. The aim of this study was to optimize the method for determining phosphate ions in order to minimize the amount of laboratory waste generated during the analysis of ammonium monophosphate (MAP) content according to ISO 7202. Comparative analysis was performed between the reference acid-base titration method and a spectrophotometric method. Optimization of the titration procedure encompassed refinement of sample preparation, adjustment of operational parameters and validation of measurement repeatability. Experimental results demonstrated that regenerated extinguishing powders, irrespective of raw material origin or applied regeneration process, conformed to all technical specifications of the PN-EN 615 standard. Implementation of this optimized methodology enables a measurable reduction in post-analysis waste. The proposed changes to the ISO 7202 standard are important for improving the organization's corporate standards in the fields of sustainability and ESG reporting.