coloring material การใช้

• It is also neater to work with than paints, dyes, and other coloring materials.
• Scientists are discovering that many of the coloring materials in plants like cranberries and blueberries have nutritional value.
• Wood charcoal also to some extent removes coloring material from solutions, but animal charcoal is generally more effective.
• On smooth streets and other surfaces, the design can be drawn in chalk and filled in with the coloring materials.
• The coloring material used to blacken the transparent PVC plastic mix is carbon black, which increases the strength of the disc and makes it opaque.
• (2 ) By converting the metal surface into an oxide or salt which is colored or capable of absorbing coloring materials, or which produce color by interference ."
• This practice may have originated in situations where there was only one material available to make the pieces from and no coloring material available to distinguish the opposing armies.