Related Experiment Video
Updated: Jun 23, 2026

Synthesis of Plant Phenol-derived Polymeric Dyes for Direct or Mordant-based Hair Dyeing
Published on: December 1, 2016
Historic dyes and how to identify them
1dha@chriscooksey.demon.co.uk
Abstract:
The origin, production, and means of confirming the authenticity of some historic dyes are described. The underlying chemistry is revealed. The evolution of analytical techniques from early times, when the main criterion for a good textile dye was fitness for use, to more modern chromatographic techniques, where the emphasis is on chemical identity, is illustrated. Recent developments have led to smaller sample size requirements, greater speed of analysis and have led to a more detailed knowledge of the chemical components of historic dyes.
Related Concept Videos
Fixation and Sectioning
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
Differential Staining Technique
Karyotyping
Special Staining Techniques
Simple Staining Technique
Methods of Classification and Identification

