Marquis reagent — NiPP
No reaction
NiPP
Source text (English): no color change
NiPP 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.
NiPP
nipp
Mecke reagent — NiPP
No reaction
NiPP
Source text (English): no color change
Mandelin reagent — NiPP
Yellow · Brown
NiPP
Source text (English): brownish
Liebermann reagent — NiPP
White · Yellow
NiPP
Source text (English): light yellow
Froehde reagent — NiPP
No reaction
NiPP
Source text (English): no color change
Zimmermann reagent — NiPP
White · Yellow
NiPP
Source text (English): no change / faint yellow
Gallic reagent — NiPP
No reaction
NiPP
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.