Retracted Article Sidebar Published: Jul 24, 2023 DOI: https://doi.org/10.52783/tjjpt.v43.i4.5173 Keywords: SPRT, Operating Characteristic, Ideal Standard. Air pollution, Standard, Realizable standard, Statistically Verifiable Ideal Standard (SVIS), Exceedences Main Article Content Retracted Abstract Retracted Article Details Issue Vol. 43 No. 4 (2022) Section Articles