Trem, I can only attribute any difference to the equipment used; we have noted none. Stephen
----- Original Message ----- From: Trem Williams <[email protected]> To: <[email protected]> Sent: Friday, April 14, 2000 1:43 PM Subject: Re: CS> PPM > Hi Stephen, > > I thought so too but the lab doing the tests for us noted the difference in > readings between digestion and no digestion. Actually I asked them to do it > both ways to see if there was any difference. I'm not hip enough to make > any further calls on the subject. Just passing on what I'm told by them. > > Back to the technophobes......... > > Trem > > > ----- Original Message ----- > From: Stephen Quinto <[email protected]> > To: <[email protected]> > Sent: Friday, April 14, 2000 10:16 AM > Subject: Re: CS> PPM > > > > Trem -- > > > > The question of "digestion" has been addressed many times. Here is our > take > > on it: > > > > Assuming that the standards are accurate (and appropriate to the range > > of sample expected) the results will be the same whatever the form of > silver > > (whether ionized or dissolved or elemental -- digested or not) ....since > it > > is spectrophotometrically quantifiable when consumed in the flame. > > > > Stephen > > > > ----- Original Message ----- > > From: Trem Williams <[email protected]> > > To: <[email protected]> > > Sent: Friday, April 14, 2000 11:11 AM > > Subject: Re: CS> PPM > > > > > > > Hello Jhon, > > > > > > Following is the instruction sheet we ship with each PWT meter. Perhaps > > the > > > issue will be more clear now. Perhaps others will argue the point. In > > any > > > case, it is not really clear which methods are the best to measure the > PPM > > > of CS. However, the PWT meter gives the closest consistent readings we > > have > > > seen at an affordable price. It is a good tool to show consistency of > CS > > > batch to batch, etc. > > > > > > > > > > > > "Instructions on use of the PWT meter > > > > > > The PWT meter is designed to measure purity of water. That is, it > > measures > > > conductivity of water. This is > > > measured in micro siemens which is abbreviated µS. > > > > > > When you insert the meter into your distilled water, it will read the > > > conductivity and if the reading is less > > > than 2.0 to 3.0 µS the water is suitable for use in making CS. This > means > > > it has very little mineralization. > > > Minerals can combine with silver in the process to form silver compounds > > > rather than colloidal silver. We > > > recommend using only steam distilled water to make CS. > > > > > > Measure the uS of your water before making CS. Make note of the value. > > > Once you have checked your > > > water and made your CS, insert the PWT into the CS. It will read > directly > > > in PPM minus the reading of > > > the water previously recorded. We had several samples of our CS > analyzed > > by > > > two different laboratories > > > using the atomic absorption method and tests at one of the labs was done > > two > > > different ways on each > > > sample. In the first case, the CS was tested without benefit of > > "digestion" > > > . That means the CS water > > > samples were analyzed by the machine without anything being done to the > > > samples. Then the second set > > > of samples were digested and the tests were run again. Digestion means > to > > > take the CS and combine it > > > with nitric acid or aqua regia (nitric and hydrochloric acids) in order > to > > > completely dissolve the silver in > > > the dispersion. This was to done to assure that all the silver is in a > > > state which can be seen by the testing > > > machine. The CS acid combination is boiled to dryness. Then enough > > > distilled water is added to bring the > > > liquid volume back up the original quantity. The silver is now a > > dissolved > > > salt and is in solution. > > > > > > In the first test, readings from undigested CS were made of part of the > > same > > > set of samples which were > > > subjected to digestion. The PPM reading of these samples read at about > > 55% > > > of the digested samples. > > > > > > So, if you read CS with your tester its reading will correspond quite > > > closely to samples which were > > > digested; or will read about 45% higher than samples which were not > > > digested. We believe the digested > > > samples more closely reflect what the real PPM is. Therefore we suggest > > you > > > use the PWT reading as the > > > true value of your CS PPM. Or, you may use the more conservative > figure > > of > > > 55% of the reading for > > > your CS value. > > > > > > Initial readings will be higher than after a waiting period for the > > > particles to evenly disburse throughout the > > > water. Best results are obtained when you wait 24 hours for the CS to > > > stabilize. > > > > > > Your PWT meter is guaranteed by the factory for a period of 1 year. If > > you > > > have any problems with the > > > unit, package it so it is protected from damage and ship it to Hanna > > > Instruments along with a copy of your > > > invoice from us. > > > > > > When calibrating your PWT, let the calibrating solution reach room > > > temperature. The PWT has a > > > temperature probe to adjust for different temperatures but it will > "hunt" > > if > > > the calibrating solution is > > > changing temperature such as being brought in from a different > > environment." > > > > > > I hope the issue is a bit more clear now. > > > > > > > > > Trem > > > www.silvergen.com > > > Constant Current Colloid Generators > > > > > > > > > ----- Original Message ----- > > > From: aka Jhon <[email protected]> > > > To: <[email protected]> > > > Sent: Friday, April 14, 2000 4:02 AM > > > Subject: Re: CS> PPM > > > > > > > > > > I must be really dense,,I have read the info from Silvergen, and > this > > > > list,,and what I gather is: > > > > ...the Hanna PWT is right on on its reading,,also it is 45% too > > high.. > > > > ,,how can it be both??? > > > > > > > > ----- Original Message ----- > > > > From: Trem Williams <[email protected]> > > > > To: <[email protected]> > > > > Sent: Thursday, April 13, 2000 6:41 PM > > > > Subject: Re: CS> PPM > > > > > > > > > > > > | Hello Robert, > > > > | > > > > | I agree very closely with your information. We market the Hanna PWT > > and > > > > | tell our customers the meter reads correctly on samples we have had > > > > analyzed > > > > | by the atomic absorption method but if they want to follow the > > > information > > > > | given by Hanna, to multiply the reading by .55 to get their reading. > > In > > > > any > > > > | case, it's right on or 45% high. I really don't see this as a > > critical > > > > | problem since we're speaking only of a few parts per million. This > is > > > > | briefly covered on our PPM page at our web site. We do not mention > > the > > > > 55% > > > > | effect since we are content to accept the AA test as being accurate. > > > > | However we do point this anomaly out on the instruction sheet we > > provide > > > > | with the PWT. > > > > | > > > > | What is important is the fact a person can tell from batch to batch > > what > > > > | they have made. The PWT is the best low cost solution to making > > > reliable > > > > CS > > > > | from one batch to the next and confirming the results. The TDS-1 is > > > > | unacceptable for measuring PPM. > > > > | > > > > | Trem > > > > | | > > > > | > > > > | ----- Original Message ----- > > > > | From: Robert Dohr <[email protected]> > > > > | To: <[email protected]> > > > > | Sent: Thursday, April 13, 2000 3:06 PM > > > > | Subject: Re: CS> PPM > > > > | > > > > | > > > > | > Greetings Seekers; > > > > | > Ivan, our numbers are similar (.59 to .57) but I think you may > have > > > them > > > > | > backwards. The instructions from Hanna and what my lab results > > > confirmed > > > > | was > > > > | > .59PPM/us. or take the reading in us/cm times .59 to get PPM. In > my > > > case > > > > | > 25.5us/cm = 15 PPM. per lab test. Also the us/cm will drop with > time > > > for > > > > | the > > > > | > first 10-12 hrs, not rise. This appears to be due to the CS > > dispersing > > > > | > throughout the DW. Immediately after making a batch the CS is > > > > concentrated > > > > | > around the ion path between the electrodes. A reading taken at > this > > > time > > > > | will > > > > | > be high and erratic. After sitting overnite the reading will be > > lower > > > > but > > > > | > stabile. After this initial dispersion the reading should not > change > > > > | futher. I > > > > | > have CS that is now several months old that still reads within 1 > > us/cm > > > > of > > > > | when > > > > | > it was made. As for accuracy my PWT measures in .1us/cm up to > > > 99.9us/cm. > > > > I > > > > | > calibrate it using a solution from Hanna that measures 84us. It > > comes > > > in > > > > | small > > > > | > pouches that you tear open and insert the meter. Use once and > throw > > > > away. > > > > | > NAMASTE' > > > > | > Beldohr > > > > | > > > > > | > > ____________________________________________________________________ > > > > | > Get your own FREE, personal Netscape WebMail account today at > > > > | http://webmail.netscape.com. > > > > | > > > > > | > > > > > | > -- > > > > | > 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]> > > > > | > > > > > | > > > > > | > > > > > > > > > > > > > > > >
