The Testing Solution is contrast reagent to distinguish Food Colors which have been used in food, and it is very convenient to examine poisonous or harmful Food Colors in food by TLC or Paper Chromatography easily.
As Food Blue No.2 (Indigocarmine) is very unstable in water, we prepared dry powder packed in three separate bottles instead of 0.1% water solution. When the examination is conducted each time, please use fresh water solution (approx. 0.1%) after adding water upto height of shoulder of the bottle.
These products are prohibited to use for coloring of food, for laboratory use only. The formation of each set subject to be changed partially in accordance with amendment of the relative law in future.