refill.....
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Biro type pen come with an interchangeable refill which can be purchased in most stationary stores. However, this applies to the more expensive ball point type - the more inexpensive version are just throw away (recyclable).
The ink fountain pens have two options; a small ink filled cartridge which is swapped as each runs out and the pump action type where you remove the upper case and there is a rubber tube inside which is squeezed when then nib is in the ink pot and the ink is sucked up filling the tube.
Cartridges
Ink Repalcements
vountain pen
The tube.
The thing that you can buy for your pen is an Ink Cartridge. And the thing that makes your pen work is an Ink Cartridge
ink cartrages from rymans or whsmith
cart
an ink cartridge you get them from stationers :L
yu use a cartridge
cartridge
Cartridges
probably something called 'refill'.-A ball point pen will normally have a "refil". An ink Pen with nib will either have a cartridge which fits in side and passes ink to the nib or will have a rubber bulb which sucks up ink from a bottle and is fed to the nib by gravityYou will buy the pen's refill. But some pens will not have refills, so you can't buy it.