Marquis reagent — UR-144
White · Purple
UR-144
Source text (English): violet
UR-144 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.
UR-144
ur-144
Mecke reagent — UR-144
White · Green · Yellow · Brown
UR-144
Source text (English): olive > brown
Mandelin reagent — UR-144
Yellow · Green
UR-144
Source text (English): green
Liebermann reagent — UR-144
White · Orange · Red
UR-144
Source text (English): orange > dark red
Froehde reagent — UR-144
White · Yellow
UR-144
Source text (English): light yellow
Simon's reagent — UR-144
No reaction
UR-144
Source text (English): no blue color change
Ehrlich reagent — UR-144
No reaction
UR-144
Source text (English): no color change not dissolving
Hofmann reagent — UR-144
No reaction
UR-144
Source text (English): no color change
Gallic reagent — UR-144
Brown · Yellow
UR-144
Source text (English): yellowish
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.