Supporting information for the NIST Internal Report entitled: Per- and Polyfluoroalkyl Substances - Non-Targeted Analysis Interlaboratory Study Final Report. The files include four comma-separated value (CSV) text files, three of the CSV text files contain summary tables of all per and polyfluoroalkyl substances (PFAS) detected in the three test samples from the interlaboratory report (sample_a_table.csv, sample_b_table.csv, sample_c_table.csv) including the individual laboratory reported identities and their associated identification confidence levels. The final CSV text file, all_pfas_table.csv, contains a summary of all PFAS detected in all of the samples and the highest level of confidence reported in each of the three test samples. These files are meant to supplement the abbreviated tables presented in the Final Report that reported the top 20 PFAS in each of the three test samples. These tables were produced through the analysis of the individual laboratory results and aggregation of the results by the reported PFAS identity.The Microsoft Excel file, PFASNTAILS_Reporting Form.xlsx, is the example form that was used by all participating laboratories to report their results. It is provided to provide readers of the interlaboratory report with context to the information that was provided by each laboratory.

Dataset for "Gaines LGT, Sinclair G, Williams AJ. A proposed approach to defining per- and polyfluoroalkyl substances (PFAS) based on molecular structure and formula. Integr Environ Assess Manag. 2023 Jan 11. doi: 10.1002/ieam.4735. Epub ahead of print. PMID: 36628931". This dataset is associated with the following publication: Gaines, L., G. Sinclair, and A. Williams. A proposed approach to defining per- and polyfluoroalkyl substances (PFAS) based on molecular structure and formula. Integrated Environmental Assessment and Management. Allen Press, Inc., Lawrence, KS, USA, 19(5): 1333-1347, (2023).

Dataset for "Gaines LGT, Sinclair G, Williams AJ. A proposed approach to defining per- and polyfluoroalkyl substances (PFAS) based on molecular structure and formula. Integr Environ Assess Manag. 2023 Jan 11. doi: 10.1002/ieam.4735. Epub ahead of print. PMID: 36628931". This dataset is associated with the following publication: Gaines, L., G. Sinclair, and A. Williams. A proposed approach to defining per- and polyfluoroalkyl substances (PFAS) based on molecular structure and formula. Integrated Environmental Assessment and Management. Allen Press, Inc., Lawrence, KS, USA, 19(5): 1333-1347, (2023).

A table of known interferences for per- and polyfluoroalkyl substances using mass spectrometry.

A table of known interferences for per- and polyfluoroalkyl substances using mass spectrometry.

The dataset includes the data used to generate figures in the manuscript and SI. This dataset is associated with the following publication: Kleiner, E., T. Sanan, S. Smith, J. Pressman, G. Abulikemu, B. Crone, and D. Wahman. Practical Implications of Perfluoroalkyl Substances Adsorption on Bottle Materials: Isotherms. AWWA Water Science. John Wiley & Sons, Inc., Hoboken, NJ, USA, 3(5): e1243, (2021).

The dataset includes the data used to generate figures in the manuscript and SI. This dataset is associated with the following publication: Kleiner, E., T. Sanan, S. Smith, J. Pressman, G. Abulikemu, B. Crone, and D. Wahman. Practical Implications of Perfluoroalkyl Substances Adsorption on Bottle Materials: Isotherms. AWWA Water Science. John Wiley & Sons, Inc., Hoboken, NJ, USA, 3(5): e1243, (2021).

Data belongs to Detlef Knappe's research group at North Carolina State University, as this study was that of PhD students and postdoctoral researches from his laboratory. This dataset is not publicly accessible because: Non-EPA generated data. It can be accessed through the following means: Non-EPA generated data. Format: Non-EPA generated data. This dataset is associated with the following publication: Liberatore, H., A. McElroy, C. Zhang, N.L. Alexander, and D. Knappe. Stability of Per- and Polyfluoroalkyl Substances in Solvents Relevant to Environmental and Toxicological Analysis. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. American Chemical Society, Washington, DC, USA, na, (2021).

Datafiles in TXT file formats listing PFAS chemicals and a list of all PFAS Chemical Lists publicly available on the CompTox Chemicals Dashboard. This dataset is associated with the following publication: Williams, A., L. Gaines, C. Grulke, C. Lowe, G. Sinclair, V. Samano, I. Thillainadarajah, B. Meyer, G. Patlewicz, and A. Richard. Assembly and Curation of Lists of Per- and Polyfluoroalkyl Substances (PFAS) to Support Environmental Science Research. Frontiers in Environmental Science. Frontiers, Lausanne, SWITZERLAND, 10: 850019, (2022).

Datafiles in TXT file formats listing PFAS chemicals and a list of all PFAS Chemical Lists publicly available on the CompTox Chemicals Dashboard. This dataset is associated with the following publication: Williams, A., L. Gaines, C. Grulke, C. Lowe, G. Sinclair, V. Samano, I. Thillainadarajah, B. Meyer, G. Patlewicz, and A. Richard. Assembly and Curation of Lists of Per- and Polyfluoroalkyl Substances (PFAS) to Support Environmental Science Research. Frontiers in Environmental Science. Frontiers, Lausanne, SWITZERLAND, 10: 850019, (2022).