ISO 20776-2:2007为抗微生物药敏试验（AST）装置确定了可接受的性能标准，用于确定细菌对抗微生物剂的敏感，中间和抗性（SIR）菌株的最小抑菌浓度（MIC）和/或解释类别测定在医学实验室。 ISO 20776-2:2007规定了AST设备（包括扩散测试系统）和评估这些设备性能的程序的要求。它定义了如何进行AST设备的性能评估。 ISO 20776-2:2007已经开发，以引导制造商进行绩效评估研究

ISO 20776-2:2007 establishes acceptable performance criteria for antimicrobial susceptibility test (AST) devices that are used to determine minimum inhibitory concentrations (MIC) and/or interpretive category determinations of susceptible, intermediate and resistant (SIR) strains of bacteria to antimicrobial agents in medical laboratories. ISO 20776-2:2007 specifies requirements for AST devices (including diffusion test systems) and procedures for assessing performance of such devices. It defines how a performance evaluation of an AST device is to be conducted. ISO 20776-2:2007 has been developed to guide manufacturers in the conduct of performance evaluation studies.