At 10:49 PM 4/4/04, you wrote:
1. I bought a Hannah TSD 1 with the distiller, because that's what they sold, and I wanted a way to gauge the quality of the DW I made with the unit. In making CS, if I have a reading on the DW before, is the difference in the reading after making the CS equivalent to the PPM in the CS?
No, not with a TDS meter. I quote from Trem's site (http://www.silvergen.com/ppm.htm) since he put this so succinctly, "There are several companies selling other Hanna instruments they indicate will test colloidal silver but were really designed to measure TDS (total dissolved solids). Colloidal silver is NOT a dissolved solid. 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. 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 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."
2. I've noted that some use a PWT for this purpose... is one better or worse than the other? What is the difference?
See answer above.
3. The initial two gallons of DW I've made (each with fresh batches of water-- one filtered, one regular tap water) have not produced a 0ppm DW, though the reading is better on the second (16 vs 06)-- which I suppose could be due to perhaps 'flushing out' the unit. Is this usual?
One can never reach 0ppm not even in a laboratory. One can only approach it. The best I can get after reverse osmosis and distilling is a .7 microsiemens on a PWT meter. Thats good enough for me. I would accept any reading below 2 microsiemens.
4. The sediment after running filtered water was soft and sludgy-- I could wipe it out with a paper towel, but after I ran the plain tap water, the sediment, though it appears the same in color, etc., is solid, and is hard, like scale, and cannot be wiped from the bottom of the tank... anyone know a reason for this?
Do not filter through an activated charcoal filter as it adds impurities. The hard scale is likely calcium carbonate also known as hard water deposit. Perfectly normal. If your water is too hard you will be unable to distill it down to acceptable CS making levels. My water was at 7 grains of hardness (I tested it for free at Sears) and I couldn't get it down past 7 microsiemens even after distilling 3 times! I ended up putting in a water softener and reverse osmosis filter.
5. What is an acceptable reading for the finished DW? Is 0ppm expecting too much? If so, what would be acceptable for CS production?
See answer to question 3.
6. Would it perhaps improve the quality if I ran the DW through the distiller again to reduce the impurities?
Yes. Though you will reach the point of diminishing returns.
7. (Last one... really.. <g>) After testing the water before and after distilling, and seeing what's left behind in the distiller, I'm wondering if it would be preferable to distill our drinking water? I was a kind of grossed out at the gunk in the bottom of the distiller after making the DW. I've always thought that the minerals in water were beneficial, but in looking into buying a distiller, I've seen DW touted as the best and only pure water, and as preferable for drinking. Any opinions on this?
I only drink distilled water. Though I have seen a huge range of opinions on this matter. There are some who claim that it leaches minerals from your body. I have seen no evidence proving this theory and so I discount it.
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