Perform an amazing experiment in color separation with a water-soluble black pen, a pipe cleaner and a round piece of filter paper. There's a rainbow of color in just one black dot! Perform an amazing experiment in color separation with a water-soluble black pen, a piece of fuzzy wire and a round piece of filter paper. An inexpensive and fun science activity to teach kids about the science of color.
- 100 pieces of 11 cm (4.3 in.) diameter filter paper
How does it work?
Use this filter paper for great chromotography experiments, including our Is Black Really Black? experiment!
Do they come in other sizes?
Nope, 11 cm is the standard size.
Great for chromotography
Tina - November 11, 2010
The filter paper worked great for our chromotography experiment with leaves. We tucked the paper in the cup with bits of shredded leaf and rubbing alcohol and the colors in the leaf moved right up the paper. It was a great way to show the 3rd graders the colors in the leaf they couldn't see.