Marquis reagent — a-PHP
No reaction
a-PHP
Source text (English): no color change
a-PHP 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.
a-PHP
a-php
Mecke reagent — a-PHP
No reaction
a-PHP
Source text (English): no color change
Mandelin reagent — a-PHP
Yellow · Orange · Red · Brown · Yellow
a-PHP
Source text (English): short reddish
Liebermann reagent — a-PHP
White · Yellow
a-PHP
Source text (English): yellowish
Froehde reagent — a-PHP
White · Yellow
a-PHP
Source text (English): faint yellow
Robadope reagent — a-PHP
No reaction
a-PHP
Source text (English): no pink color change
Simon's reagent — a-PHP
No reaction
a-PHP
Source text (English): no blue color change
Ehrlich reagent — a-PHP
No reaction
a-PHP
Source text (English): no color change
Hofmann reagent — a-PHP
White · Yellow · Orange
a-PHP
Source text (English): yellow/orange
Scott reagent — a-PHP
Pink · Blue
a-PHP
Source text (English): blue
Zimmermann reagent — a-PHP
White · Yellow
a-PHP
Source text (English): yellow or no color change
Gallic reagent — a-PHP
No reaction
a-PHP
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.