Mostly 5 percent Sulphuric acid spray with slightly heating on heating mantle is preferred to visualize the TLC spots of phytochemicals.

I agree with the sulfuric acid spray with heating. It chars the compounds and is a universal detector.

There are several chemical reagents commonly used to detect phytochemical constituents on TLC (Thin Layer Chromatography) plates. The choice of reagent depends on the type of compounds being analyzed and the specific functional groups or classes of compounds being targeted. Here are some commonly used spray reagents for TLC analysis of phytochemical constituents:

It's important to note that the choice of spray reagent depends on the specific analytes being targeted and the desired detection sensitivity. Additionally, it's recommended to use appropriate safety measures and handle these reagents with care as some of them can be hazardous. It's always a good practice to consult