Marquis reagent — PX2
White · Yellow
PX2
Source text (English): yellowish
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.
px2

White · Yellow
PX2
Source text (English): yellowish
No reaction
PX2
Source text (English): no color change
No reaction
PX2
Source text (English): no color change
White · Orange
PX2
Source text (English): orange
No reaction
PX2
Source text (English): no color change
White · Yellow
PX2
Source text (English): yellow
No reaction
PX2
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.