Hi Sandra,

It's for measuring the Total Dissolved Solids in water such as tap water.  That 
usually ranges from 200 to 600+ uS (microsiemens) which is just right for the 
TDS meter to measure.

Trem 

----- Original Message ----- 
  From: [email protected] 
  To: [email protected] 
  Sent: Sunday, April 13, 2003 7:47 PM
  Subject: Re: CS>Re:CS>get both kinds here


  I don't know what is the purpose of the TDS, though.

  Sandra