Marquis reagent — bH-2C-B
White · Yellow · Green
BOH-2C-B
Source text (English): yellow>green
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.
bh-2c-b · BOH-2C-B

White · Yellow · Green
BOH-2C-B
Source text (English): yellow>green
White · Yellow · Brown
BOH-2C-B
Source text (English): olive brown
Yellow · Brown
BOH-2C-B
Source text (English): brownish
White · Yellow · Black
BOH-2C-B
Source text (English): black
White · Brown
BOH-2C-B
Source text (English): brown
Orange · Pink
BOH-2C-B
Source text (English): pink
No reaction
BOH-2C-B
Source text (English): no blue color change
No reaction
BOH-2C-B
Source text (English): no color change
No reaction
BOH-2C-B
Source text (English): no color change
Pink · Green
BOH-2C-B
Source text (English): pale green
White · Yellow
BOH-2C-B
Source text (English): no change / faint yellow
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.