Filter Paper Perform an amazing experiment in color separation with this filter paper. email to friend
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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 pipe cleaner and a round piece of filter paper. An inexpensive and fun science activity to teach kids about the science of color.

What's included?

• 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!