Environmental Testing

Environmental testing reference standards are foundational analytical materials for water quality monitoring, soil and sediment contamination assessment, air sampling analysis, and hazardous waste characterization in environmental regulation and compliance. As global regulatory attention to emerging contaminants intensifies, demand for environmental reference standards is rapidly expanding beyond traditional persistent organic pollutants (POPs) to a broader range of contaminant classes — including PFAS, antibiotics and antimicrobial resistance markers, microplastic-associated chemicals, endocrine-disrupting compounds (EDCs), and pharmaceutically active compounds (PhACs).

Key regulatory drivers include China's Ministry of Ecology and Environment priority new pollutant control list, Stockholm Convention POPs annexes, EU Water Framework Directive (WFD) priority substance lists, US EPA priority pollutants, and SVOC monitoring methods (EPA 8270 series). The catalog covers dioxins and furans (PCDD/Fs, with comprehensive ¹³C-labeled isotope internal standard systems), polychlorinated biphenyls (PCBs, including Aroclor mixtures), polycyclic aromatic hydrocarbons (16 EPA PAHs and extended analogs), per- and polyfluoroalkyl substances (PFAS including next-generation alternatives), short-chain and medium-chain chlorinated paraffins (SCCPs/MCCPs), organochlorine pesticides, antibiotic emerging contaminants, and endocrine-disrupting compounds, across water, soil, sediment, biological tissue, and atmospheric particulate matrices.

CATO Research Chemicals Inc. offers over 2,200 environmental testing reference standards suitable for ultra-trace analytical applications at pg/L to ng/L concentration levels, each supplied with full assigned-value data, measurement uncertainty reports, and stability monitoring results. A comprehensive ¹³C-labeled isotope internal standard system is available for high-difficulty ultra-trace methods including dioxins and PCBs. The majority are in stock for rapid fulfillment of routine procurement needs from environmental monitoring agencies and research institutions.