Look up Salt Lamps.They produce negative ions.
The best place to get a good introduction is on
http://www.ebay.com
Some of the sellers on Ebay go into detail on what they will do.I have them in 
most of my rooms.
They are made of Himalayan Rock Salt.No 2 are alike.
They make good presents for the holidays.
Very few people have ever heard of them.
  ----- Original Message ----- 
  From: [email protected] 
  To: [email protected] 
  Sent: Thursday, November 03, 2005 2:49 PM
  Subject: CS>anyone know how to make a negative ion air purifier?


  they are outrageously expensive and fragile and I dislike the dealer I bought 
the last outrageously expensive "flair" unit from.

  I understand the directions are as easy as making a CS generator and it can 
be made for under $50 but I lost the bookmark to the instructions.

  Anyone know anything about how to make one?

  Harper