Marquis reagent — Xylopropamine
White · Purple · Red
Xylopropamine
Source text (English): violet - orange/red
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.
xylopropamine

White · Purple · Red
Xylopropamine
Source text (English): violet - orange/red
White · Green
Xylopropamine
Source text (English): green - green/brown
Yellow
Xylopropamine
Source text (English): yellow - brown/yellow
White · Yellow · Brown
Xylopropamine
Source text (English): yellow - brown / yellow
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.