Individual synthetic, sequence-verified quantitative standards targeting blaMIR (9), blaFOX (12), blaACC, blaDHA, blaCMY, blaMOX AmpC beta-lactamase genes associated with resistance to cephalosporins and other beta-lactam antibiotics. Supplied at defined concentrations of High – 10,000 copies/µL, Medium – 1,000 copies/µL, and Low – 100 copies/µL, these standards are designed for accurate assay calibration and quantitative performance evaluation across a broad dynamic range. They enable robust assay validation, sensitivity and limit-of-detection (LoD) determination, and assessment of assay linearity in molecular assays. Compatible with real-time PCR and other nucleic acid amplification platforms, the standards ensure consistent inter-run comparability, reliable quantification, and ongoing monitoring of assay performance. Suitable for research, assay development, and routine quality control applications in antimicrobial resistance testing (RUO)