I use several meters, EC, PPM etc and I got a couple of ordinary ppm meters (for family) from over USA way for about 14 dollars each on ebay. My comparison records to EC meters etc are quite adequate, just double the reading on a ppm meter gets me in the ballpark as a home producer, commercial solutions would probably need more accurate testing equipment, but for the home producer they're fine, at least one isn't 'feeling their way around in the dark', meters are a false sense of security anyway without laboratory analysis, but what the heck, near enough <g>.
N. Date: Tue, 20 Oct 2009 16:15:20 -0700 From: [email protected] Subject: Re: CS>Getting Started To: [email protected] http://cgi.ebay.com/HM-Digital-TDS-EZ-Meter-Tester-Water-ppm-Purity-Filter_W0QQitemZ270411724544QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item3ef5cb7700 From: Jeff Maahs <[email protected]> To: [email protected] Sent: Tue, October 20, 2009 7:18:20 AM Subject: Re: CS>Getting Started It looks like EC meters are much less expensive than what I had seen previously. One of the sites given to me earlier had a meter but it was well over $100. I hate to be a pain but would a meter such as this one on ebay (http://tinyurl.com/yzzzvbn) be appropriate for these solutions? Jeff From: Ode Coyote <[email protected]> To: [email protected] Sent: Tue, October 20, 2009 6:56:17 AM Subject: Re: CS>Getting Started You can use a voltmeter to tell when to stop, but only on a given setup that's always the same as referenced by an EC meter. Current, electrode spacing and surface exposure have to be constants for voltage to tell you anything. In *making* CS, the voltage is nearly irrelevant, so it needn't be a constant. A PPM meter is an EC meter that dilutes the info it gets to suit "salt water". Ode _________________________________________________________________ Use Messenger in your Hotmail inbox Find out how here http://windowslive.ninemsn.com.au/article.aspx?id=823454
