ICH: Q 4 B Annex 4A: To note for evaluation and recommendation of pharmacopoeial texts for use in the ICH regions on micrological examination of non-sterile products: micrological enumeration tests - Step 5(ICH:Q 4 B附录4A：关于非无菌产品的微观检查，ICH地区使用的药典文本的评估和建议注释：微观计数试验-步骤5)