The identification of Radix scutellariae was silica gel G plate, n-butanol-glacial acetic acid-water(7:1:2) as the development reagent, chlorideferric(1%) as color developing reagent.
Ferricchloride solution constantly scouring the surface of stainless steel plate, the solution of ferric ion rapidly oxidized stainless steel plate, stainless steel plate was etched on the go.
三氯化铁溶液不断地冲刷不锈钢板的表面，溶液中的三价铁离子快速氧化不锈钢板，不锈钢板就被蚀刻下去了。
3
If Baume concentration is too low, you can add high concentrations of ferricchloride solution.