Marquis reagent — a-PPP
No reaction
a-PPP
Source text (English): no color change
a-PPP 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.
a-PPP
a-ppp
Mandelin reagent — a-PPP
Yellow · Orange · Red · Brown · Yellow
a-PPP
Source text (English): short reddish
Ehrlich reagent — a-PPP
No reaction
a-PPP
Source text (English): no color change
Hofmann reagent — a-PPP
No reaction
a-PPP
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.