the erasers are normal the ink is special it has about 80% graphite
The real IWAKO "made in Japan" Japanese Erasers are not toxic and are environmentally friendly. The knock off "made in China" are not! In Canada, real Iwako "made in Japan" Japanese erasers are now available at independent toy stores across Canada. Just be sure to ask for Iwako "made in Japan" so you don't get the fake ones.
sulfite or hydroxide ions See related link for more detail.
Yes, conventional pencil, pen, and chalkboard erasers all contain carbon as they are made of organic materials. However at one time there was a typewriter eraser made of a bundle of fiberglass inside a pen like housing, being made of glass (an inorganic material) they contained no carbon. These erasers however generated thousands of tiny airborne particles of glass when they were used, these glass particles could be inhaled causing health hazards and produced intense itching on contact with the skin. For these reasons they are no longer manufactured.
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White board erasers are made simply from cloth.
Erasers are partly made from rubber partly made of soming els
the erasers are normal the ink is special it has about 80% graphite
A sponge!
The eraser is made out of rubber.
They're made from natural and artificial rubber.
i honeslty have no idea that is why i put this up here =) Nope, erasers are made out of rubber
They are made from rubber which comes off a rubber tree.
No. They are usually made of plastic.
Rubber and pumice
1943
Some are made out of animal fat and what ever rubber is made out of