Ivan- > >Do you mean 3ppm TDS or 3uS.
3ppm >I must say that even my dw that has been around for months still reads >1uS. I should clarify. The 3ppm is due to the calibration technique required by the 3-electrode CS Systems Phaser unit I'm using. Baking soda is added to pure water to bring the conductivity up to 3ppm (measured by the TDS meter). The Phaser won't work without an initial conductivity that is roughly equivalent to 3ppm. This initial 3ppmTDS measurement corresponds to 6uS on the PWT meter - which correlates to the conversion that Hanna gave me of 1ppm = 2 uS when measuring dissolved solids in water. Does this make any sense at all?!!? cheers, Steve King > >Regards - Ivan > >----- Original Message ----- >From: Steve King <ssk...@nildram.co.uk> >To: <silver-list@eskimo.com> >Sent: Tuesday, 26 October 1999 00:15 >Subject: Re: CS>ppm standard - 1.74PPM/uS > > >> Ivan- >> >> >As Ag+ >> >5ppm 1.76 2.8uS >> >10ppm 1.76 5.7uS >> >15ppm 1.77 8.5uS >> >20ppm 1.77 11.3uS >> >25ppm 1.78 14.0uS >> >50ppm 1.79 27.9uS >> >> I've got a Hanna PWT (0-100uS) meter >> and I'm very interested in >> these figures. How do I take >> into account the initial TDS of the >> batch water. say for instance I >> start with water that has a TDS of >> 3ppm and then after my run I measure >> 11.3uS? Do I subract the 3 from >> 20ppm? >> >> Many thanx, >> >> Steve King > > > >-- >The silver-list is a moderated forum for discussion of colloidal silver. > >To join or quit silver-list or silver-digest send an e-mail message to: >silver-list-requ...@eskimo.com -or- silver-digest-requ...@eskimo.com >with the word subscribe or unsubscribe in the SUBJECT line. > >To post, address your message to: silver-list@eskimo.com > >List maintainer: Mike Devour <mdev...@id.net> > >
