依据色阶数据制成工作曲线，再依水样的吸光值从工作曲线找出对应的物质浓度。
First, a working curve must be made according to the colour gradation data and then the density of the substances is found out with the help of the extinction value of the water samples on it.
使用酶标仪动态检测纳米细菌的吸光度值，间接了解其生长速度。
Also the absorbance of nanabacteria was measured by Elisa to know its growth speed indirectly.
以百里酚的次溴酸钠溶液为显色剂，用正丁醇萃取显色产物，以分光光度计比色测定有机相的吸光度值。
Using thymol-sodium hypobromite as chromogenic reagent, and extracting the colour formed with butanol, a spectrophotometric method for the determination of arginine in fermentation broth was studied.
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