This study aims to create a consistent and unified standard for the registration and control of public health pesticides, and to inform consumers of the characteristics of various formulations used in pesticides, as well as provide pest control personnel with the means to choose pesticides based on accurate specifications, thus ensuring their safety in preparation and application. For pesticide formulation standardization, a list of public health pesticides registered for years 2017 through 2019 was examined, and mislabeled formulations were identified by referencing and comparing international standards from the WHO Pesticide Evaluation Scheme (WHOPES) and FAO/WHO Joint Meeting on Pesticide Specifications (JMPS), as well as Taiwan agricultural pesticide standards. Furthermore, five formulations (emulsifiable concentrate, emulsion oil in water, soluble concentrate, granule, and dustable/wettable powders) were selected for the development of required tests on formulation specifications. Besides a test of active ingredients that is required for every public health pesticide, many specifications are formulation-specific. For emulsifiable concentrate (EC), tests for emulsion stability, persistent foam, storage stability, and stability at low temperatures are recommended. For emulsion, water in oil (EW), emulsion stability, persistent foam, and storage stability are recommended. For soluble concentrate (SL), persistent foam, storage stability, and stability at low temperatures are recommended. For granule (GR), particle size and storage stability (volatile active ingredients are exempt from this test) are recommended. For dustable powder (DP), sieve test and storage stability are recommended. For wettable powder (WP), persistent foam, wettability, sieve test, and storage stability are recommended. Recommended standard values for each specification are also provided. In addition, public health pesticide products were acquired from the industrial sector, and tests for specifications were performed, and results were compared to recommended standards to determine the current status of public health pesticide specifications. An examination of the capabilities of environmental testing agencies was also conducted and compared to current public health pesticide testing requirements specified in law. In Taiwan, it is recommended that agencies having obtained ISO17025 certificates can be used to implement various specification tests with reliable methods. A conformation of Taiwan’s public health pesticides to international and national standards on formulation specifications and testing methods could result in a unified standard for producers to abide by. Thus, the completion of this study shall increase the overall quality of public health pesticide products, and recommend specific steps towards ensure consumer safety.

pesticide , formulation standardization