I
IdahoOrchid
Guest
I found this page that has some testers and information:
http://www.watercenter.com/category... Meters, Testers and Probes&Cart=114106376557
I am not sure how we might use this but it does have some good descriptions and instruction:
http://wwwchem.csustan.edu/CHEM2000/EXP6/exp6a.htm
Here is where hand held meter could help get more accurate measurements than the LED indicator in the article. Measure the voltage across the resistor and you should be able to get a finer indication of the solution. Just remember that the strength of the battery can/will have an effect on the result. I imagine the same is true for most other meters unless they are designed to us a smaller voltage than the suppy provides.
Even better, a "cheap" tester that will do both EC and PPM testing:
http://www.labsafety.com/store/item/100723/
Heck, do a seach (I use metacrawler.com) on conductivity tester and you will find ALL and MORE than you ever wanted to know on this.
http://www.watercenter.com/category... Meters, Testers and Probes&Cart=114106376557
I am not sure how we might use this but it does have some good descriptions and instruction:
http://wwwchem.csustan.edu/CHEM2000/EXP6/exp6a.htm
Here is where hand held meter could help get more accurate measurements than the LED indicator in the article. Measure the voltage across the resistor and you should be able to get a finer indication of the solution. Just remember that the strength of the battery can/will have an effect on the result. I imagine the same is true for most other meters unless they are designed to us a smaller voltage than the suppy provides.
Even better, a "cheap" tester that will do both EC and PPM testing:
http://www.labsafety.com/store/item/100723/
Heck, do a seach (I use metacrawler.com) on conductivity tester and you will find ALL and MORE than you ever wanted to know on this.