methylene blue number

例句：

1. 1.The chemical was used to determine the concentration of methylene blue in the sample.
   该化学物质用于测定样品中甲基蓝的浓度。
2. 2. The test is designed to measure the number of bacteria that can survive in a certain concentration of methylene blue.
   该测试旨在测量在特定浓度的甲基蓝中能够存活的细菌数量。
3. 3.The manufacturer recommends using a specific concentration of methylene blue for this application.
   制造商推荐使用特定浓度的甲基蓝进行此应用。