Rf value

The Rf value of single colour and combination shade of ME type reactive dye at different concentrations are measured, and the fluctuation of colour shade appearing in padding is analyzed.

测定ME型活性染料不同浓度单色及拼混的比移值,对其在轧染中出现的色光波动进行分析,有利于染色质量的提高。

TLC of Roxithromycin;

采用两次单向展开的方法将罗红霉素与杂质完全分离,测得其比移值为0。