2024 40 CFR 53.2 – General requirements for a reference method determination

2023 40 CFR 53.2 – General requirements for a reference method determination

2022 40 CFR 53.2 – General requirements for a reference method determination

2021 40 CFR 53.2 – General requirements for a reference method determination

2020 40 CFR 53.2 – General requirements for a reference method determination

2019 40 CFR 53.2 – General requirements for a reference method determination

2016 40 CFR 53.2 – General requirements for a reference method determination

2015 40 CFR 53.2 – General requirements for a reference method determination

2014 40 CFR 53.2 – General requirements for a reference method determination

2010 40 CFR 53.2 – General requirements for a reference method determination

2009 40 CFR 53.2 – General requirements for a reference method determination