Marquis reagent — DOF
No reaction
DOF
Source text (English): no color change
DOF 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.
DOF
dof
Mecke reagent — DOF
White · Green · Yellow
DOF
Source text (English): green / yellow
Mandelin reagent — DOF
Yellow · Green
DOF
Source text (English): green
Liebermann reagent — DOF
White · Black
DOF
Source text (English): black
Froehde reagent — DOF
White · Yellow · Green
DOF
Source text (English): yellow > greenish
Gallic reagent — DOF
No reaction
DOF
Source text (English): no color change
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.