This is great info. After seeing the price at one web site I thought they were all very expensive.
Since I still have the packaging I'm going to return the one I bought and get one of the ones you mention. Thank you all! Jeff ________________________________ From: Ode Coyote <[email protected]> To: [email protected] Sent: Wed, October 21, 2009 4:22:10 AM Subject: Re: CS>Getting Started $43.70 isn't too bad and maybe not a bad meter, but you can do better. Not sure what the measurement range is. "EC" isn't a "unit of electrical conductivity" so far as I know so " 0- 20 EC " doesn't mean anything to me. The spec should be in micro [uS] or milli -siemens [mS] or, like, mS/CC of EC or uS/CC of EC You would want a slightly higher range than 20 uS and better resolution than mS increments. Since the PPM range is 20,000 PPM, that indicates that EC is in Milli Siemens or even Siemens This one for $22.98 looks more suited..and it comes out of Florida vs Hong Kong. http://cgi.ebay.com/Digital-EC-Conductivity-Meter-Tester-Water-1999-s-cm_W0QQitemZ140347674771QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item20ad5f9093 Specifications: * LCD display: 4 digits * Measure Range: 0 ~ 1999 ¼s/cm * Resolution: 1 us/cm * Accuracy: ± 2% full scale * Operating Temperature: 0 ~ 50 °C (32 ~ 122 °F) * Power: 2 x CR2032 watch-type batteries included. * Item size: approx. 150 (L) x 27 (W) x 20 (D) mm (5.91' x 1.06' x 0.79' inch) * Item weight: approx. 46g with batteries installed. * Calibrated at factory * This listing does not include calibration fluid. <http://shop.ebay.com/items/?_nkw=ec+meter&_in_kw=1&_ex_kw=&_sacat=See-All-Categories&_okw=ec+meter&_oexkw=&_udlo=&_udhi=&_ftrt=901&_ftrv=1&_sabdlo=&_sabdhi=&_samilow=&_samihi=&_sadis=200&_fpos=Zip+code&_fsct=&LH_SALE_CURRENCY=0&_fss=1&fsradio=%26LH_SpecificSeller%3D1&_saslop=1&_sasl=zmatt14&_sop=12&_dmd=1&_ipg=50>Click here for EC meter listings that do for a few dollars more. * Supplied with a mini-screw driver for calibration * Automatic temperature compensation You can get a proven brand name EC meter [HM Digital] for $30, free shipping. Ode At 05:18 AM 10/20/2009 -0700, you wrote: > 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>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 > > > -- The Silver List is a moderated forum for discussing Colloidal Silver. Instructions for unsubscribing are posted at: http://silverlist.org To post, address your message to: [email protected] Address Off-Topic messages to: [email protected] The Silver List and Off Topic List archives are currently down... List maintainer: Mike Devour <[email protected]>
