Marquis reagent — LH-21
No reaction
LH-21
Source text (English): no color change
LH-21 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.
LH-21
lh-21
Mecke reagent — LH-21
No reaction
LH-21
Source text (English): no color change
Mandelin reagent — LH-21
No reaction
LH-21
Source text (English): no color change
Liebermann reagent — LH-21
No reaction
LH-21
Source text (English): no color change
Froehde reagent — LH-21
No reaction
LH-21
Source text (English): no color change
Gallic reagent — LH-21
No reaction
LH-21
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.