Marquis reagent — THCA
White · Brown
THCA
Source text (English): dark brown
THCA 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.
THCA
thca
Ehrlich reagent — THCA
No reaction
THCA
Source text (English): no color change
Morris reagent — THCA
No reaction
THCA
Source text (English): no blue color change
Cannabis (4-AP) reagent — THCA
White · Blue
THCA
Source text (English): blue
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.