Excellent, Jphii! That's good, thorough work, fair within the practical constraints of such a test. Right on.
Paul, I am in the process of moving to Florida early next week and could not take up your offer to test your product. I have been, however, paying attention on your test and what exactly the Record Research products, which rely on ultrapure water, do. Professionally, I hold a degree in Aquatic Science, so I can get pretty technical, except when someone like Raoul ticks my nerves...and then I start giving my "prescriptions".
The subject of resin chemistry can get complicated and demands time and thorough thinking to understand. When I went through corporate training everybody had BS degrees and was having a hard time (except the chemists). What goes on is that as a resin begins to exhaust, the heavier ions ( SiO2, Ca+2, etc, ) are released in favor of the smaller, lighter ones. This is a broad generalization, as an anion resin will exhibit a Silica dip before actually breaking through--just to get a broad picture. Final polishing stages should be devoid of bivalent atoms and ions in order to assure the highest purity. The system I used to run would have gas transfer membranes followed by activated carbon + hydrazine to remove CO2 + O2 past the reverse osmosis unit, which delivered the water @ 8 to 9 uSiemens. A softener followed the degassing units and then on to electrodeionization stacks which mainly removed monovalent ions. After that were two mixed bed polishers in series which brought the water to specs (0.055 uSiemens conductivity, TOC < 20 ppb, SiO2 < 5ppb, DO < 5ppb). Why am I saying all this?
1) Because the water coming out was as pure as the laboratory reagent water and I could clean my glasses of all grease with just a Kim-wipe and ultrapure water. I think ultrapure water has applications to remove stuff from records AFTER initial cleansing and perhaps might benefit being the mixing agent for concentrated solution.
2) Because ultrapure can be made relatively inexpensively in the home if distilled water is available. Considering the price (or pricelessness) of a record collection, this deionization cartridge is more than affordable and simple to use:
Deionization filter
I think it would make ideal rinse/mixing water for the hobbyist.
If anybody is interested I can compile a bibliography of scientific articles on the subject of resin chemistry and demineralized water (after I move & get settled).
With psychic power and primal intensity,
Paul, I am in the process of moving to Florida early next week and could not take up your offer to test your product. I have been, however, paying attention on your test and what exactly the Record Research products, which rely on ultrapure water, do. Professionally, I hold a degree in Aquatic Science, so I can get pretty technical, except when someone like Raoul ticks my nerves...and then I start giving my "prescriptions".
The subject of resin chemistry can get complicated and demands time and thorough thinking to understand. When I went through corporate training everybody had BS degrees and was having a hard time (except the chemists). What goes on is that as a resin begins to exhaust, the heavier ions ( SiO2, Ca+2, etc, ) are released in favor of the smaller, lighter ones. This is a broad generalization, as an anion resin will exhibit a Silica dip before actually breaking through--just to get a broad picture. Final polishing stages should be devoid of bivalent atoms and ions in order to assure the highest purity. The system I used to run would have gas transfer membranes followed by activated carbon + hydrazine to remove CO2 + O2 past the reverse osmosis unit, which delivered the water @ 8 to 9 uSiemens. A softener followed the degassing units and then on to electrodeionization stacks which mainly removed monovalent ions. After that were two mixed bed polishers in series which brought the water to specs (0.055 uSiemens conductivity, TOC < 20 ppb, SiO2 < 5ppb, DO < 5ppb). Why am I saying all this?
1) Because the water coming out was as pure as the laboratory reagent water and I could clean my glasses of all grease with just a Kim-wipe and ultrapure water. I think ultrapure water has applications to remove stuff from records AFTER initial cleansing and perhaps might benefit being the mixing agent for concentrated solution.
2) Because ultrapure can be made relatively inexpensively in the home if distilled water is available. Considering the price (or pricelessness) of a record collection, this deionization cartridge is more than affordable and simple to use:
Deionization filter
I think it would make ideal rinse/mixing water for the hobbyist.
If anybody is interested I can compile a bibliography of scientific articles on the subject of resin chemistry and demineralized water (after I move & get settled).
With psychic power and primal intensity,