We use a DAKO Autostainer and DAB as a chromagen. We have been seeing a
brown haze all over the slides all the way up to the slide labels. We have
been seeing a lot of DAB collecting in the sink of the machine as well DAKO
tells us that they don't know what is happening. It doesn't seem to be a
messed up lot of DAB and we assayed our buffer to make sure that it had zero
protein content. Anyone have any ideas as to what this might be?
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