Marquis reagent — a-PBP
White · Yellow
a-PBP (alpha-pbp)
Source text (English): yellow
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.
a-pbp · a-PBP (alpha-pbp) · alpha-pbp

White · Yellow
a-PBP (alpha-pbp)
Source text (English): yellow
White · Yellow
a-PBP (alpha-pbp)
Source text (English): yellow
Yellow · Brown
a-PBP (alpha-pbp)
Source text (English): olive
White · Yellow · Brown
a-PBP (alpha-pbp)
Source text (English): yellow > olive
White · Yellow · Green
a-PBP (alpha-pbp)
Source text (English): yellow > green
Brown · Yellow
a-PBP (alpha-pbp)
Source text (English): yellow
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.