Description

For the macro-detection of lignin.

Apply 1 or 2 drops of the solution to the suspect sample, using the integral dropper. If lignin is present a brilliant red colour develops, owing to the presence of coniferaldehyde groups in the lignin.

For the histological staining of fibres.

Fibres are treated for 2-5 minutes followed by the addition of a few drops of concentrated Hydrochloric Acid, resulting in a bright red colouration for lignified fibres.

In both cases the colour will fade within 30minutes of development.

Weisner reagent will not work on embedded section of fibre.