| Note | Please note our continuous ink systems, Refills and Refillable Cartridges are not made by Brother, Canon, Epson or HP these are registered trademarks and we use them for descriptive purposes only |
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| Model | HP Deskjet 3840 continuous ink supply system & printer ink cartridge refill bottles |
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| individual resevoir / bottle sizes | 100-200ml for HP Deskjet 3840 continuous ink supply systen and ink cartridge refill |
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| Qty colours | HP Deskjet 3840 four colours |
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| Colour | HP Deskjet 3840 Black, HP Deskjet 3840 cyan, HP Deskjet 3840 Magenta, HP Deskjet 3840 Yellow |
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| ink type used in system | HP Deskjet 3840 Black pigment based, Colours Dye based |
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| Compatible with | HP Deskjet 3747 3745 3744 3740 3550 3535 3520 3450 3425 3420 3325 3323 3322 3320 3745 3653 3647 3645 3300 3320 3322 3325 3420 3425 3500 3520 3535 3550 3600 3847 3845 3843 3840 3651 3650 3620 HP Officejet 4200 4212 4215 5615 HP Fax 1240 HP PSC 1310 13 |
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| Replaces | HP Deskjet 3840 C8727AE HP 27 black ink cartridges, HP Deskjet 3840 HP C8728AE HP 28 colour ink cartridges |
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| Average | Please note comparisions are averages and based on the content of std fill original Deskjet 3840 inks |
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| System / Bottle Equates to | 20 Deskjet 3840 black ink cartridges, 20 Deskjet 3840 Colour ink cartridges, |
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| To fully refill | 24.24 |
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| Running costs per cartridge | Black £0.50 colour £0.72 |