HP21? I have been told the HP27 and the HP 56 are the same size, just contain more ink than the HP21, which prints so few pages. Thank you for your help.
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yes you can use it...
HP21 is good one for the printing, but HP 56 is the best for the printing ink.
If you want to get most effective printing ink you can get it from The Needham Ink.
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