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Where can i get a cheap, reliable tds meter?

Lol, I just used mine like 5 minutes ago.  I bought mine off ebay about 3 months ago.  Here is the link to the same one.  It seems well made.
<a href="http://cgi.ebay.com/Hanna-TDS-METER-PPM-Water-TESTER-On-SALE-NOW_W0QQitemZ5999958676QQcategoryZ42022QQrdZ1QQcm
dZViewItem" target="_blank">TDS Meter</a>
 
[b said:
Quote[/b] (Nickz123 @ Sep. 19 2005,2:38)]Lol, I just used mine like 5 minutes ago.  I bought mine off ebay about 3 months ago.  Here is the link to the same one.  It seems well made.
<a href="http://cgi.ebay.com/Hanna-TDS-METER-PPM-Water-TESTER-On-SALE-NOW_W0QQitemZ5999958676QQcategoryZ42022QQrdZ1QQcm

dZViewItem" target="_blank">TDS Meter</a>
Thanks. Just bought it.
 
My new TDS meter was waiting for me in my mailbox when I returned to Houston from Dallas.

My tap water reads ~335 ppm TDS.  Rainwater collected from my roof reads 27 ppm TDS.

Water in the Utric pail of my outside bog garden reads 35 ppm TDS.

I got the model you linked to above.

How often does it need calibration, or will the calibration never get so far off that i can't really trust it for this purpose?

The meter was made by Hanna instruments, so it WAS very well made.

I have a pH/Temp meter from them I use in brewing beer.
 
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