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The results of the ink bottle capacities are summarized in the table maintained on this page. What we measure is not the total capacity of the bottle (which will be marked for reference) but the capacity to allow the pen to be filled leaving the lowest residue when the contents are exhausted.  

The results of the ink bottle capacities are summarized in the table maintained on this page. What we measure is not the total capacity of the bottle (which will be marked for reference) but the capacity to allow the pen to be filled leaving the lowest residue when the contents are exhausted. The purpose is to check how reliable the claim to fill "to the last drop" is.

==Measurement mode==

==Measurement mode==

{{Doppia immagine verticale|right|Pelikan-140-StripedGreen-Posted.jpg|Duofold-DeLuxe-PearlBlackStriated-Sr-Open.jpg|300|The pens used in measurements.}}

{{Doppia immagine verticale|right|Pelikan-140-StripedGreen-Posted.jpg|Parker-Duofold-Cell-Sr-3V-PearlBlackStriated-Open.jpg|300|The pens used in measurements.}}

The measurement methods are described in [https://www.penciclopedia.it/6933/fino-allultima-goccia/ this article (in italian)] on the blog and discussed in [https://forum.fountainpen.it/viewtopic.php?f=12&t=20844 this topic (in italian)] on the forum, where the results of the various measurements are also explained. This page is mainly used to report the summary of the results, we will limit ourselves to a brief summary.

The measurement methods are described in [https://www.penciclopedia.it/6933/fino-allultima-goccia/ this article (in italian)] on the blog and discussed in [https://forum.fountainpen.it/viewtopic.php?f=12&t=20844 this topic (in italian)] on the forum, where the results of the various measurements are also explained. This page is mainly used to report the summary of the results, we will limit ourselves to a brief summary.

We used two pens (a [[Pelikan 140]] for medium to small size and a [[Duofold]] De Luxe for medium-large size) to progressively empty the bottle of ink or the inkwell under examination by repeatedly filling them. The four methods to fill the pen from the bottle defined in the following paragraph were used, weighing the remaining residue for each of them with centigram accuracy using a balance.

We used two pens (a [[Pelikan 140]] for medium to small size and a [[Duofold]] De Luxe for medium-large size) to progressively empty the bottle of ink or the inkwell under examination by repeatedly filling them. The four methods to fill the pen from the bottle defined in the following paragraph were used, weighing the remaining residue for each of them with centigram accuracy using a balance.

==Definitions==

==Definitions==