Marquis reagent — 4-HO-DET
White · Yellow
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): yellow > olive
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.
4-ho-det · 4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det) · Ethocin · CZ-74 · 4-hydroxy-det

White · Yellow
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): yellow > olive
White · Black
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): blue / green > black
Yellow · Black
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): black
White · Green · Black
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): black
White · Green
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): green
No reaction
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): no pink color change
Orange · Pink · Purple
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): Light purple
White · Purple · Black
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): Purple, Black
White · Green
4-HO-DET (Ethocin, CZ-74, 4-hydroxy-det)
Source text (English): green
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.