I just transferred some selenium toner, 1:9, from the covered Ziploc tray I used it/stored it in these last 2-3 years, to wine bottles for easer storage and when I wiped the tray bottom with a paper towel, I found that the sludge filled with metallic appearing flakes. Is this selenium crystals, silver or what?
In my previous life, whenever I finished a job or session using this toner, down the drain it went, so there was no time for this to happen. Now I just replenish the toner when it weakens, without filtering.
What are your thoughts, experience or recommendations?