Hi Ken, You're correct. I was trying to be simplistic but have changed the information to be more specific. Hopefully this will be clear to anyone reading the new info. This is what I have on the site now.
"There are several companies selling other Hanna instruments they indicate will test colloidal silver but were really designed to measure TDS (total dissolved solids). As calibrated from the factory the TDS meters will normally read only about one half the PPM of ionic silver that the PWT meter will read. Most of the Hanna TDS instruments have ranges of 0-999 PPM or 0-1999 with 2% accuracy of full scale. That means the unit can be off by as much as 20 or 40 PPM at the low OR high end of the range or at any reading. If you are trying to measure colloidal silver at the 5-15 PPM range, it is obvious that a 20 or 40 PPM possible error is not acceptable especially if the reading is only half the actual amount of silver in the water. The PWT will not be off more than 2 PPM so you can see how much more accurate it is. The PWT meter is the only meter that works at the accuracy and range desired to measure CS." Trem ----- Original Message ----- From: "Ode Coyote" <[email protected]> To: <[email protected]> Sent: Tuesday, April 06, 2004 4:41 AM Subject: [silver_list] Re: CS>Water Distilling Questions... > The PWT works the same way as the TDS meter...on conductance. > The PWT's range is much closer to what CSrs are dealing with for less > error and resolution is many times higher. > The conductivity readout has not been fudged by a multiplier to give the > illusion that PPM is being measured. > Any reading taken with a TDS meter should be doubled to get an "idea" of > approximate PPM CS for most people. > There are many factors that can skew the association of conductivity with > PPM....two different animals, usually of about the same size. > Ode > > > > >The PWT meter is the only one that works at the accuracy and range desired > >to measure CS. It is a conductance type meter; not a TDS (total dissolved > >solids) meter." > > > -- > 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] > Silver List archive: http://escribe.com/health/thesilverlist/index.html > > Address Off-Topic messages to: [email protected] > OT Archive: http://escribe.com/health/silverofftopiclist/index.html > > List maintainer: Mike Devour <[email protected]> > >
