Ref: http://escribe.com/health/thesilverlist/m58999.html
> Re: CS>Silver Generation with ULVDC > From: Robert Berger > Date: Thu, 15 May 2003 14:04:20 > Mike, > Do "Ole Bob" a favor! Please report your data as time in hours and > decimals, and drop all of the other numbers except voltage and > current. > PLEASE PLEASE, I takes too much effort to plot!!! > Thanks, > "Ole Bob" Yes, I know. It is quite confusing to do the calculation, and this probably led to my mistake in picking the wrong stop time for the 1.4 mA run. I have been thinking of reprogramming my editor to report the elapsed time in seconds, but I don't have enough room left in the overlay. It would be simpler to write a quick post-processor in Pascal to convert the date and time to Julian and report the difference in seconds and tenths. The ideal solution would be to make a simple interface to convert the PC parallel port to handle GPIB. Unfortunately, the Keithley doesn't have a GPIB interface, and the HP3456A doesn't measure current. I could make a simple CMOS switch to measure the voltage across a small resistor and get the current, and subtract it from the voltage across the cell to get the true cell voltage. Then the system could be completely automated. I would add an option in the data acquisition software to add comments and observations when appropriate. A simple interrupt-driven multitasking would allow data to continue to be collected while comments are being edited. Now all I need is a GPIB cable. I have a bunch, but they are back in Toronto. So, I guess the post-processor is the quickest solution. There will be a temporary pause in my posts, but all data reported henceforth will be in seconds and tenths. Actually, I expect the data to follow a smooth exponential curve with variations due to bubble formation. An interesting part of the UVL run was to rotate the rods 90 degrees and see the variation in cell resistance. I attribute this to an ion cloud forming around the rods, but did not report it in the conclusions. With the low ion velocity in the UVL process, stray thermal currents would tend to disrupt the cloud and change the rate of silver ion production. However, the low current and long run times would tend to average this out, and help maintain a repeatable process. It will take good instrumentation to collect the data to prove this, and I really need to get some GPIB cables to improve the data collection. But there's lots more to discover with colloidal silver! Best Regards, Mike Monett -- The silver-list is a moderated forum for discussion of colloidal silver. Instructions for unsubscribing may be found at: http://silverlist.org To post, address your message to: silver-list@eskimo.com Silver-list archive: http://escribe.com/health/thesilverlist/index.html List maintainer: Mike Devour <mdev...@eskimo.com>
