TDS readings
 

Okay Brad, we'll give you a second chance :D ... TDS is measured with what? Test kit, electonic instrument???? What?

TDS readings
 

ALright! The easy way is to use an electronic TDS meter. Or, a well mixed sample is filtered through a standard glass fiber filter, and the filtrate is evaporated to dryness in a weighed dish and dried to a constant weight at 180 degrees C. The increase in dish weight represents the total dissolved solids. The meter might be easier. The latter method is taken from "Standard Methods for the Examination of Water and Waste Water, 20th ed."

TDS readings
 

Hi,

IMHO, TDS is not the only thing that tells you if you water is clean or not. It only measures a subclass of stuff that could be in your water. There are some chemicals and materials that the TDS does not account for (say chlorine and bicarbonates). Just keep that in mind when you are measuring the TDS value.

- Victor.

TDS readings
 

<font size="2" face="Verdana, Helvetica, sans-serif">you need another hobby :D : D

Steve