Froehde reagent — Meperidine
White · Black
Meperidine
Source text (English): grey
Pethidine 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.
Pethidine
pethidine · Meperidine · Pethidine (Meperidine, Demerol, Dolantin, Dolcontral) · Demerol · Dolantin · Dolcontral
Marquis reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
White · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): dull orange
Marquis reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
White · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): slow orange
Mecke reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
Mecke reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
White · Yellow · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): light yellow (slow) / orange
Mandelin reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
Liebermann reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
White · Red · Orange
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): red - orange
Froehde reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
No reaction
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): no color change
Froehde reagent — Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
White · Yellow
Pethidine (Meperidine, Demerol, Dolantin, Dolcontral)
Source text (English): clear or yellow
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.