Ehrlich reagent — 5-HTP
White · Pink · Purple
5-HTP (Oxitriptan, Cincofarm, Levothym, Levotonine, Oxyfan, Telesol, Tript-OH, Triptum)
Source text (English): Pink > Purple
Calibration mode 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.
5-HTP
Hofmann reagent — 5-HTP
White · Yellow · Green
5-HTP (Oxitriptan, Cincofarm, Levothym, Levotonine, Oxyfan, Telesol, Tript-OH, Triptum)
Source text (English): yellow > green
Aspirin
Marquis reagent — Aspirin
White · Pink · Red
Aspirin
Source text (English): pink > deep red
Mecke reagent — Aspirin
No reaction
Aspirin
Source text (English): no color change
Mandelin reagent — Aspirin
Yellow · Brown · Black
Aspirin
Source text (English): black
Liebermann reagent — Aspirin
White · Brown
Aspirin
Source text (English): light brown
Froehde reagent — Aspirin
White · Blue · Purple
Aspirin
Source text (English): blue > purple
Simon's reagent — Aspirin
No reaction
Aspirin
Source text (English): no blue color change
Ehrlich reagent — Aspirin
No reaction
Aspirin
Source text (English): no color change
Hofmann reagent — Aspirin
No reaction
Aspirin
Source text (English): no color change
Morris reagent — Aspirin
Pink · Green
Aspirin
Source text (English): pale green
Folin reagent — Aspirin
No reaction
Aspirin
Source text (English): no color change
Codeine
Marquis reagent — Codeine
White · Purple
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark purple
Mecke reagent — Codeine
White · Blue · Green
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark bluish green
Mandelin reagent — Codeine
Yellow · Green · Orange · Brown
Codeine (Lean, Purple Drank, Syrup)
Source text (English): dark olive spots
Liebermann reagent — Codeine
White · Black · Brown
Codeine (Lean, Purple Drank, Syrup)
Source text (English): faint brown / black
Froehde reagent — Codeine
White · Yellow
Codeine (Lean, Purple Drank, Syrup)
Source text (English): faint yellow
Robadope reagent — Codeine
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no pink color change
Simon's reagent — Codeine
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no blue color change
Ehrlich reagent — Codeine
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change
Hofmann reagent — Codeine
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change
Scott reagent — Codeine
No reaction
Codeine (Lean, Purple Drank, Syrup)
Source text (English): no color change
Ibuprofen
Marquis reagent — Ibuprofen
No reaction
Ibuprofen
Source text (English): no color change
Mecke reagent — Ibuprofen
White · Brown
Ibuprofen
Source text (English): light brown
Mandelin reagent — Ibuprofen
Yellow · Brown
Ibuprofen
Source text (English): dark brown
Liebermann reagent — Ibuprofen
White · Red · Brown
Ibuprofen
Source text (English): dark reddish brown
Froehde reagent — Ibuprofen
No reaction
Ibuprofen
Source text (English): no color change
Simon's reagent — Ibuprofen
No reaction
Ibuprofen
Source text (English): no blue color change
Scott reagent — Ibuprofen
No reaction
Ibuprofen
Source text (English): no color change
Melatonin
Marquis reagent — Melatonin
No reaction
Melatonin
Source text (English): no color change
Mecke reagent — Melatonin
No reaction
Melatonin
Source text (English): no color change
Liebermann reagent — Melatonin
White · Brown
Melatonin
Source text (English): light brown
Froehde reagent — Melatonin
No reaction
Melatonin
Source text (English): no color change
Simon's reagent — Melatonin
No reaction
Melatonin
Source text (English): no blue color change
Ehrlich reagent — Melatonin
White · Red · Purple
Melatonin
Source text (English): reddish > purple
Hofmann reagent — Melatonin
White · Yellow · Green
Melatonin
Source text (English): yellow / orange > green
Morris reagent — Melatonin
Pink · Green
Melatonin
Source text (English): pale green
Zimmermann reagent — Melatonin
White · Yellow · Orange
Melatonin
Source text (English): orange
Paracetamol
Marquis reagent — Paracetamol
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
Mecke reagent — Paracetamol
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
Mandelin reagent — Paracetamol
Yellow · Green
Paracetamol (Acetaminophen)
Source text (English): moderate olive
Liebermann reagent — Paracetamol
White · Brown · Purple
Paracetamol (Acetaminophen)
Source text (English): brownish purple
Froehde reagent — Paracetamol
White · Green · Blue
Paracetamol (Acetaminophen)
Source text (English): blueish / teal
Simon's reagent — Paracetamol
No reaction
Paracetamol (Acetaminophen)
Source text (English): no blue color change
Scott reagent — Paracetamol
No reaction
Paracetamol (Acetaminophen)
Source text (English): no color change
Taurine
Robadope reagent — Taurine
Orange · Pink
Taurine
Source text (English): slow pink
Scott reagent — Taurine
No reaction
Taurine
Source text (English): no color change
Morris reagent — Taurine
No reaction
Taurine
Source text (English): no color change
Tryptophan
Ehrlich reagent — Tryptophan
White · Red
Tryptophan
Source text (English): red / purple
Hofmann reagent — Tryptophan
White · Yellow · Green
Tryptophan
Source text (English): yellow > green
Colour swatches are illustrative, not measured colour values or reaction timing. Original reference observations are preserved below each result.