Marquis reagent — a-PVT
White · Brown
a-PVT
Source text (English): brownish
a-PVT 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-PVT
a-pvt
Mecke reagent — a-PVT
White · Brown · Yellow
a-PVT
Source text (English): brown > yellow
Mandelin reagent — a-PVT
Yellow · Brown · Yellow
a-PVT
Source text (English): brown > yellow
Liebermann reagent — a-PVT
White · Yellow
a-PVT
Source text (English): yellow
Froehde reagent — a-PVT
White · Brown
a-PVT
Source text (English): faint brown
Robadope reagent — a-PVT
Orange · Yellow
a-PVT
Source text (English): light yellow
Hofmann reagent — a-PVT
Yellow
a-PVT
Source text (English): faint yellow or none
Gallic reagent — a-PVT
No reaction
a-PVT
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.