Marquis reagent — 25B-NBOMe
White · Brown · Green
25B-NBOMe (25b)
Source text (English): brown > green
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.
25b-nbome · 25B-NBOMe (25b) · 25b

White · Brown · Green
25B-NBOMe (25b)
Source text (English): brown > green
White · Green · Yellow
25B-NBOMe (25b)
Source text (English): yellow / green
Yellow · Red · Green · Brown
25B-NBOMe (25b)
Source text (English): red AND green > brown
White · Yellow · Black
25B-NBOMe (25b)
Source text (English): yellow > black
White · Yellow
25B-NBOMe (25b)
Source text (English): yellow
No reaction
25B-NBOMe (25b)
Source text (English): no pink color change
No reaction
25B-NBOMe (25b)
Source text (English): no blue color change
No reaction
25B-NBOMe (25b)
Source text (English): no color change
White · Pink
25B-NBOMe (25b)
Source text (English): pink
No reaction
25B-NBOMe (25b)
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.