配法是用亚硫酸使品红溶液还原，若有醛酮类存在时便使之氧化而重新呈现品红本身的洋红色。
It is produced by the reduction of fuchsin by sulfurous acid, and is oxidized by aldehydes and ketones, restoring the magenta color of the fuchsin.
配法是用亚硫酸使品红溶液还原，若有醛酮类存在时便使之氧化而重新呈现品红本身的洋红色。
It is produced by the reduction of fuchsin by sulfurous acid, and is oxidized by aldehydes and ketones, restoring the magenta color of the fuchsin.
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