Marquis reagent — 1B-LSD
White · Black
1B-LSD
Source text (English): blackish
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.
1b-lsd

White · Black
1B-LSD
Source text (English): blackish
White · Green
1B-LSD
Source text (English): green/dark green
Yellow · Black
1B-LSD
Source text (English): black spots
White · Black
1B-LSD
Source text (English): black
White · Yellow · Green
1B-LSD
Source text (English): fain yellow/green
No reaction
1B-LSD
Source text (English): no blue color change
No reaction
1B-LSD
Source text (English): no color change
White · Yellow · Green
1B-LSD
Source text (English): yellow / green
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.