Hi James, I don't mean to jump in when you addressed the post to Dean but the fact is that the PWT reads CS much better than the TDS-1 for several reasons as pointed out on our website. Also, you do NOT divide by half when using the PWT. You ADD to the reading. In the case of our generators you add 20%. Hanna is right in telling you to cut the reading in half IF you're measuring dissolved solids such as minerals in the water. However, we as CS users are interested in measuring the content of CS to determine what silver content we have. In this case the meter only measures the ionic portion of CS. And that reading is always less than the total amount of silver content because the meter will NOT read the colloidal portion. Therefore one has to add to the reading to get the total PPM. The correction factor will be the difference between how much of the mix was colloidal versus ionic. We have had our CS analyzed by atomic absorption spectrophotometry and it is generally always the same ratio.
Another thing I forgot to mention is the fact that the TDS-1 has an accuracy tolerance of + - 2% of full scale. Since the TDS-1 reads from 0-999 that's + - 20 PPM. Since the PWT reads from 0-99.9 and has the same percentage of accuracy that's + - 2 PPM. And the PWT gives you a decimal point in the reading while the TDS-1 reads in whole numbers only. I hope this helps clear up some of the controversy about the TDS-1 versus the PWT. The PWT is the best choice hands down for measuring PPM. Trem www.silvergen.com ----- Original Message ----- From: James Allison To: [email protected] Sent: Tuesday, May 28, 2002 1:48 PM Subject: Re: CS>Re: Supercharged CS (Digest #387) Hi Dean, I'm just curious as to what you base your opinion about the meters on? From what I understand, they both read conductivity, and both do the same job, except that the PWT reads in µS/cm instead of PPMs like the TDS1 does, which actually makes the PWT harder to use, because you need to divide the number from the PWT in half, in order to get an accurate reading. At least that's what all the techs over at Hanna have told me time and time again. If you have info that differs, please let me know. Yours in health, James Allison ----- Original Message ----- From: Dean T. Miller To: [email protected] Sent: Tuesday, May 28, 2002 1:36 PM Subject: Re: CS>Re: Supercharged CS (Digest #387) Hi John, Which Hanna tester? If it's not marked, it's probably the TDS (Total Dissolved Solids) tester, which is almost useless for measuring distilled water and CS. The Hanna PWT (Pure Water Tester) is what's needed. On Tue, 28 May 2002 07:21:46 -0700, "John Reeder" <[email protected]> wrote: >That is the problem, rapid particle production and distilled water >doesn't go together. If there is rapid production, there is generally >some type of particulate contamination in the water. I measure my >distilled water with my Hanna tester (Walmart brand) and it is always >close to zero, as it should be. -- Dean -- from (almost) Des Moines -- KB0ZDF -- 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: [email protected] -or- [email protected] with the word subscribe or unsubscribe in the SUBJECT line. To post, address your message to: [email protected] Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <[email protected]>
