Marquis reagent — RCS-4
White · Green · Brown · Black
RCS-4
Source text (English): olive > black
RCS-4 reagent analysis
There are more substances than colors, so to increase analysis precision use a kit with multiple reagents. Exact color of a reaction depends on adulteration, quantity, lighting, temperature, exposure to air, storage, as well as reagent quality and degradation. Positive or negative result does not indicate if a substance is safe. No substance is 100% safe.
RCS-4
rcs-4
Mecke reagent — RCS-4
White · Yellow
RCS-4
Source text (English): yellow (olive)
Mandelin reagent — RCS-4
Yellow · Brown · Black
RCS-4
Source text (English): brown > black
Liebermann reagent — RCS-4
White · Brown
RCS-4
Source text (English): brown > dark brown
Froehde reagent — RCS-4
White · Yellow
RCS-4
Source text (English): yellow
Simon's reagent — RCS-4
No reaction
RCS-4
Source text (English): no blue color change
Scott reagent — RCS-4
No reaction
RCS-4
Source text (English): no color change
Gallic reagent — RCS-4
Brown · Yellow · Brown
RCS-4
Source text (English): yellow - olive
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.