CONDUCTIVITY METERS:
Look at http://biophysica.com/content/science-behind-our-technology/formulas-and-conversions/
And look at http://www.biophysica.com/colloidal_generator/accessories-domestic.php
We sell several conductivity test meters. We prefer the HANNA PWT HI98308 Use your HANNA PWT meter to give a good estimate of PPM. Manually shut off generator after 24 hours, and then measure it for ppm This is a small professional quality microsiemens meter specially chosen for the required range of our colloidal mineral water application (0-999 uS). Do not use a TDS meter which gives false results. We can supply advanced meters to measure pH, ORP, dissolved oxygen, etc. . One uS is approximately equal to 1 ppm.
Electrical conductivity should have risen from 1 or 12 uS up to a high of 20 to 50 uS.
How is concentration (PPM) measured?
There is no easy and accurate way of measuring Silver Ion and Particle concentration. Measuring ppm in water is a very inaccurate art and is usually done crudely by measuring electrical conductivity, such as with the Hanna Water Meter which we stock and sell available at http://www.biophysica.com/conductivity.htm
Some experts consider that Electrical Conductivity or TDS (Total Dissolved Solids) using a Water Meter is an approximate measure of ppm. Our analysis revealed that 35 micro-Siemens corresponded with 45 ppm. During the charging process Conductivity rises from an initial level of 0 or 1 micro-Siemens and after 48 hours rises up to 20-50 micro-Siemens. The other subjective way to check is to taste the bitter taste at the back of the mouth to make sure that there is a minimum concentration. A concentration of 5 ppm seems hardly sufficient to combat serious infections because, with a dilution of the 10 liters of body fluid, concentration in the tissues and blood may become reduced to ineffective levels. The only problem with CS is not taking enough.
Even among experts, there is confusion about ppm and how much is Ionic and how much particulate (colloidal), and how conductivity meters and analytical laboratories reflect these measurements. For example, it is possible to obtain an electrical conductivity reading of 60 microsiemens and for the lab to say that it is only 35 ppm when another lab will report that it is 72 ppm or 1.2 times the conductivity reading (the figure of 1.2 is more likely to be accurate). Regarding the water test meter, it measures only the electrical resistance of the water which is only an indirect measure of ions and atoms in the water and is the best method conveniently available. Also, nanoparticles can have a positive or usually a negative charge.
With Reverse Osmosis water the measurement usually commences at around 12 uS and it rises to about 20-50 units after 48 hours with Silver (1 ppm per hour). An accurate measure of parts per million can only be done by sending a sample of the water to a special analytical laboratory, which we have done several times and correlated the ppm result with conductivity, with report such as we have done at http://www.biophysica.com/analysis.shtml
The final concentration is proportional to the volume of water, electrode area, amount of time, and current level in milliamperes during the charging process. Too much current density (ma per square cm) damages the electrode surface, damages and breaks down the water (electrolysis), produces undesirable ions and large ineffective particles which can cause Argyria (a harmless skin discoloration).
Conductivity testing is done by immersing the end of the Conductivity Meter into the water and reading the display on the meter. Most users test the quality of their RO Water first and often find that there is considerable differences between pure water suppliers. Many distilled waters have added Ozone which could contribute to undesirable Oxide formation and yellow discoloration.
