Hackaday3 年
aluminum sulphate
Given time, the polymer residue will settle to the bottom and you can easily pour off most of the clean liquid. You can also ... which is — apparently — mostly alum. Alum’s been used to ...
Hackaday3 年
aluminum sulfate
Given time, the polymer residue will settle to the bottom and you can easily pour off most of the clean liquid. You can also ... which is — apparently — mostly alum. Alum’s been used to ...