This homogeneous colorimetric assay is based on the conversion of a tetrazolium salt MTT, a pale yellow substrate, to formazan, a purple dye.

该匀相比色检测法是基于一种淡黄色底物四唑盐MTT可转化生成甲臜，甲臜是一种紫色显色剂。

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The comparison of deodorization of yeast fermentation, black tea salt system, complex purple Perilla salt system and smoking fluid salt system for silver carp fish was studied.

研究比较酵母发酵、红茶提取液腌制、紫苏混合液腌制、烟熏液腌制四种方法对淡水鲢鱼的脱腥效果。

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The machine blends iron, bleach and sodium hydroxide to form a dark purple liquid mixture of ferrate, salt and water that gets metered into the water supply. (The color disappears instantly as it reacts with the water.) Common disinfectants ozone and chlorine can turn the water cloudy or, worse, leave behind harmful chemical by-products.

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