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

