Chemical Flocculant for dropping gold, defloc for metastannic

[snoman701]

Can anyone recommend a good floc agent available in the USA for collecting all of the tiny chunks of gold following a dirty drop?

Same, but opposite for defloc for the metastannic acid for a silver nitrate (plus Cu, Cd, Zn & other nitrates). It does filter, but it takes 12 hours.

Deano recommended one, but it appears the company has changed hands, and it's another one of those chemicals that's available in large quantities for mines...looking for something in the 100 gram size.

 

[Ravn]

For filtration of metastannic acid you can speed up your filtration by using a filter aid.

https://www.afssociety.org/what-are-filter-aids/

 

[Lino1406]

HBF4, concentrated fluoboric acid, a solvent for SnO2