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The ink is both acid free and archival safe

It dries quickly and doesn't smear when gotten wet

It is non toxic and pH neutral

Lightfast and waterbased

It won't damage your pen 

under any circumstances

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in 1-2 days)

Please allow about 10-12 days for the delivery.

A tracking number uploaded in 1-2 days.

Satisfaction guaranteed

 Not happy? Please return for a full refund.

NO QUESTIONS ASKED

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Below is some interesting information about 

ink cartridges in general

(their longevity)

Inks are water solutions and cartridges are made of what seems to be

polyethylene. Over a period of years, water molecules will migrate through

the walls of the cartridge--it has nothing to do with whether the cartridge

is sealed properly or not--it will happen anyway. This situation is

roughly analogous to a balloon filled with air. After several days, air

leaks through the rubber, no matter how well it is sealed. The bottom line

is that cartridges have a shelf-life on the order of years. They should be

fine for about 3 years or so at room temperature. They can last much

longer at lower temperatures, but don't allow them to freeze--the water

will expand and possibly break the cartridge.

In theory, a way to make cartridges last *almost* indefinitely, would be to

store them in a jar filled with water. This would *essentially* keep the

water inside the cartridge in equilibrium with the water outside--i.e.

about as much water would leak in as would leak out. The reason that I

said *almost* is that there is a very weak force of osmosis at work. This

is because there is a difference in the concentration of molecules

dissolved inside the cartridge (i.e. the ink and small amounts of other

additives) and outside, where there is nothing dissolved). This force will

very slowly pull water into the cartridge as the exact concentrations

attempt to reach equilibrium (this is the principal of dialysis). However, we

are now talking about a process that would take perhaps decades. Also in

theory, if the water in the bottle had the exact concentration of large

molecules as inside the cartridge, the cartridge would last more than a

lifetime. Chemistry in (very slow) action. 

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Among many, many others they'll fit the following ones: Montblanc, ROTRING Art Pen , PELIKAN, INOXCROM , A&W pens, ACME, Ancora, Baoer, Bexley, Bossert & Erhardt, Cartier, Charles Hubert Paris Pens, Caran d'Ache, Pierre Cardin, Colibri, Conklin, Conway Stewart, Dikawen, Diplomat , Duke, Elysee, FEND, Filcao, Fuliwen, Genius, Greenfield pens, Haolilai, Laban, Dani-Trio, Daniel Hechter, David Oscarson, Delta, Faber Castell, Haolilai, HERO, Itoya, Jean Pierre Lepine, JINHAO,  Jörg Hysek, Kaigelu, Kaiduoli, Kaweco, Krone, Levenger, Lalex, Lanbo, Lanbitou, Libelle, Loiminchay, Luoshi, Marlen, Padrino, Panache, Penatia, Michel Perchin,Pirre Paul , Montegrappa, Nettuno, Northpointe, Olympia, OMAS, Osmiroid,  MONTEVERDE, Platignum, Recife, Regal, REFORM, RETRO 51, Schmidt, Senator, Sensa, Signum, Sizzle Stix, Spalding, Stipula, Stypen, Taccia, Tombow, Underwood, Visconti, Vuarnet, Waldmann, Waterford, Wenliang, Xezo, Yard-O-Led, Zhenjue...

....and most no name fountains pens