is this cuprisorb used up

ddc0715 · Mar 1, 2023

i have had this in a reactor to address small amounts of metals includig copper. its been running almost 4 week. and the photo below is post water rinsing for detrius build up. my next icp wont be in for another week or so. so i have no way to know if its working other than sight.. its not dark blue thats for sure, but has dark brown spots. unless im color blind. hahahaha i dont want to cut open the bags to reactivate if i do not need to. so should i let it run another week or so until my next icp test comes back to know for sure or go ahead and drop it in a vat of acidand water.. I also wonder ifthis is removing the metals that come from my my trace elemnets like iron,nickel and cobalt. for example it does say for removal of other metals as well

SPR1968 · Mar 5, 2023

I can’t help with the question, but I can bump the thread to see if we can get you some assistance

Randy Holmes-Farley · Mar 5, 2023

I do not know as I’m not convinced the color brown is much of an indication of depletion.

What levels of these metals are you trying to remove?

MinnieMouse2 · Mar 5, 2023

CUPRISORB THEY SAY
CupriSorb™ is a powerful adsorbent of copper and heavy metals AND
Exhaustion is indicated by a pronounced discoloration of the beads to a deep blue black color.

biom · Mar 5, 2023

I'm also have no experience of using this product but from what I've seen from other posts it looks when it started to saturate it becomes first greenish before gets blue and then dark blue. Yours looks more brown. Before it gets dark blue 250 ml of it will remove 7,5 grams (!) of Copper from your water which is a lot even for a very big tank.
And yes they say it will remove other heavy metals too, so it will remove iron, cobalt, nickel but I am not sure how it works at the low levels this metals naturally occur.

I personally would wait for the ICP results

Randy Holmes-Farley · Mar 5, 2023

I would caution in the color interpretations that the blue green indicates copper binding, but those same binding sites can be taken up by other metals that may give different colors or no color at all.