Has the local government authority put a quantity limit in place? If not, just dilute it to ensure that it's under 50ppm.
john s ============= Peter Badcock wrote:
Sorry for the cross post if any of you also read APUG, but I'll post conclusions to both lists.So I've searched APUG, pure_silver and the 'net but to little avail. Can folks please list me a few different inexpensive and relatively easy methods to measure/test when the silver in my (yet to be processed/recovered) fixing solution is below 50ppm ? Then my local government authority will permit it to be discarded down the drain.Some ideas include measuring the conductivity of the sol'n (assuming I am testing for dissolved silver). Also perhaps Colorimetry. No test strips will test such low levels of silver.rgdsPeter
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