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Then the pen has been filled with running water. For a comparison that takes into account the liquid remaining in the feeder, the weight was measured several times starting from the first filling of the empty and dry pen, repeating the loading and unloading cycles.

Then the pen has been filled with running water. For a comparison that takes into account the liquid remaining in the feeder, the weight was measured several times starting from the first filling of the empty and dry pen, repeating the loading and unloading cycles.

The loading was carried out normally as you do when you load the ink for writing, removing the excess liquid from the feeder (shaking it slightly to drip and placing the nib near the neck of the bottle) and drying the one that may be present on the section. An ordinary bottle of ink was used (Waterman 50 ml, but any one is fine, just soak the pen tip completely in it).

The filling was carried out normally as you do when you load the ink for writing, removing the excess liquid from the feeder (shaking it slightly to drip and placing the nib near the neck of the bottle to remove excess) and drying the one that may be present on the section. An ordinary bottle of ink was used (Waterman 50 ml, but any one is fine, just soak the pen tip completely in it).

[[File:Esempio-Misura-Pelikan-481.jpg|thumb|An example of measurement]]

[[File:Esempio-Misura-Pelikan-481.jpg|thumb|An example of measurement]]