Marquis reagent — Xylazine
White · Pink
Xylazine
Source text (English): pink
Xylazine 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.
Xylazine
xylazine
Mecke reagent — Xylazine
White · Yellow
Xylazine
Source text (English): light yellow
Mandelin reagent — Xylazine
Yellow · Brown
Xylazine
Source text (English): red brown
Liebermann reagent — Xylazine
White · Orange · Brown
Xylazine
Source text (English): instant reddish brown
Froehde reagent — Xylazine
No reaction
Xylazine
Source text (English): no color change
Simon's reagent — Xylazine
Orange · White
Xylazine
Source text (English): white precipitate (borderline; no blue)
Scott reagent — Xylazine
Pink · Blue · Pink
Xylazine
Source text (English): blue > pink and blue layers (immediate)
Zimmermann reagent — Xylazine
White · Yellow
Xylazine
Source text (English): yellow
Cannabis (4-AP) reagent — Xylazine
No reaction
Xylazine
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.