This is activated carbon, 1 Kg, from the brand Nevermore. Specially design to be non corrosive so that it can be used in 3D printer sir filters.
The package was opened and a few grams were used in some experiments. You can see the real weight of the package in the picture.
The bag is made aluminium and has a zip seal. The bag has been sealed after the first use and never again open.
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