After insertion of a fitting glass fibre frit (alternatively baked out glass wool), the glass
cartridge (chromatography column) is baked out in a drying cabinet at 400°C for 24 hours. In
order to fill the glass cartridge, it is placed in a high-walled beaker lined with aluminium foil.
Exactly 3 g of the 0.3 % silver nitrate/silica gel mixture (Item 3.7.3) is weighted into the glass
cartridge and slightly compacted by tapping the cartridge.