Ehrlich reagent — 4-HO-DPT
White · Purple · Black
4-HO-DPT (Procin, 4-hydroxy-n, n-dipropyltryptamine)
Source text (English): pueple > 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.
4-ho-dpt · 4-HO-DPT (Procin, 4-hydroxy-n, n-dipropyltryptamine) · Procin · 4-hydroxy-n · n-dipropyltryptamine

White · Purple · Black
4-HO-DPT (Procin, 4-hydroxy-n, n-dipropyltryptamine)
Source text (English): pueple > blackish
Pink · Green
4-HO-DPT (Procin, 4-hydroxy-n, n-dipropyltryptamine)
Source text (English): pale green
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.