Home / Standards / GB/T 46452-2025 GB/T 46452-2025 Active Purity and enzymatic activity determination of nitrile hydratase 腈水合酶纯度和活性的测定 Standard Type GBT ICS 07.080 CCS A40 Status 现行 Issue Date 2025-10-05 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A