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Epson T6731 Black Ink Bottle | 70ml Capacity | Dye-Based Formula | EcoTank L800 L805 L810 L850 L1800
Crisp invoices, sharp lettering and deep shadows from the refill that empties soonest.
Condition: New
Note: price and availability are subject to change without prior notice
Epson T6731 Black Ink Bottle is now in stock at Mascom International, priced at KSh 2,400 for a brand new and sealed 70ml bottle of genuine Epson dye-based ink. The Epson T6731 Black Ink Bottle refills the black tank on the EcoTank L800, L805, L810, L850 and L1800, the six-colour photo models in this family. Epson rates one bottle at roughly 1,900 photos in 10x15cm format under ISO/IEC 24712 test patterns. Collect the Epson T6731 Black Ink Bottle over the counter at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD, or order for delivery.
Black carries more of the work than any other colour in a six-tank printer, so the Epson T6731 Black Ink Bottle is usually the first refill you buy. Every letter on a school assignment, every line of a KRA return printout and every table in a quotation draws from this tank. In photos, black builds the outlines, hair detail and shadows that give a print its depth. Photo studios printing passport pictures, church offices running weekly bulletins and cyber cafe operators printing application forms all watch this tank drop first. Keeping one spare bottle on the shelf means a job never stops halfway.
Unlike market stalls selling unmarked refill ink, Mascom International supplies the Epson T6731 Black Ink Bottle factory sealed, with Epson packaging and code intact. Genuine dye ink is matched to the print head, which protects the nozzles from the clogging that cheap refills often cause. Buyers throughout Kenya tell us they plan black purchases around term starts and tax season, when document volume peaks. Pay-on-arrival delivery reaches all 47 counties, and Nairobi orders usually arrive the same day. Walk in, check the seal yourself, and leave with the Epson T6731 Black Ink Bottle in minutes.
Common Questions About the Epson T6731 Black Ink Bottle
Which printers does the Epson T6731 Black Ink Bottle fit?
The Epson T6731 Black Ink Bottle fits five EcoTank photo printers: the L800, L805, L810, L850 and L1800. All five use the same six-colour ink set, so this bottle and its five colour siblings work across every model in the group. It does not fit four-colour models such as the L210 or L3150, which use a different bottle family. Before you order from Mascom International, check the code printed beside the tank on your printer, or send a photo of it on WhatsApp and we will confirm.
Why does the black ink run out before the colours?
Black empties fastest because it prints every word of text and also darkens shadows, outlines and deep tones in photos. A colour tank only works when that colour appears on the page, while black works on nearly every job. The Epson T6731 Black Ink Bottle therefore needs replacing more often than the cyan, magenta or yellow bottles in the same printer. Offices and cyber cafes in Kenya that mix documents with photos often keep a second black bottle in reserve while buying colours one at a time.
Is the Epson T6731 Black Ink Bottle good for printing documents as well as photos?
Yes, the Epson T6731 Black Ink Bottle prints sharp, readable text on ordinary office paper as well as rich blacks on glossy photo paper. Its dye-based formula soaks into the paper, which gives smooth tones in pictures and clean lettering in letters and reports. Dye ink is less water-resistant than pigment ink, so a document that may get wet, such as a site notice, is better laminated. For contracts, school assignments and eCitizen printouts filed indoors, it performs reliably.
Genuine Epson T6731 Black Ink Bottle vs a generic 673 refill, which is better?
The genuine Epson T6731 Black Ink Bottle is the safer choice because its ink is made for the L800-family print head. Generic refills cost less per bottle, but their viscosity and dye quality vary between batches, which can clog nozzles and trigger repeated head cleaning cycles that waste ink. Mixing a generic black into a tank of genuine ink also shifts the tone of prints. At KSh 2,400 from Mascom International, the genuine bottle protects a printer that costs far more to repair.
How many prints do I get from one Epson T6731 Black Ink Bottle?
Epson rates one Epson T6731 Black Ink Bottle at about 1,900 photos in 10x15cm format, extrapolated from ISO/IEC 24712 test patterns. Text-page yield depends on how much of each page is covered, so a sheet of dense tables uses more ink than a short letter. At KSh 2,400, the black share of each 10x15cm photo works out to roughly KSh 1.26. Printing in draft mode for internal copies stretches the bottle further between refills. Mascom International keeps it in stock for quick reorders.
How should I store the Epson T6731 Black Ink Bottle in Kenya's heat and humidity?
Store the Epson T6731 Black Ink Bottle upright, sealed and out of direct sun, in a cool cupboard rather than on a window ledge. Heat thins dye ink and humidity can soften the packaging, which matters in Mombasa, Kisumu and other warm towns. Keep the cap tight once opened and use the remaining ink within a few months. Check the use-by date printed on the box before filling. Never leave an open bottle within reach of children.
How do I refill the black tank on an L800 or L850 without spilling?
Refill the black tank on a flat surface, opening only the black tank cap so no colour gets mixed in. Open the Epson T6731 Black Ink Bottle as its label shows, then pour slowly until ink reaches the upper line on the tank. Close both caps firmly and wipe any drops straight away, since dye ink stains clothes and desks. Mascom International staff will demonstrate the process at our Kimathi Street store if it is your first refill.
Who should buy the Epson T6731 Black Ink Bottle, and who should skip it?
Buy the Epson T6731 Black Ink Bottle if you own an L800, L805, L810, L850 or L1800 and print a mix of documents and photos. Studios, schools and cyber cafes running these printers daily get the most from keeping one in reserve. Skip it if your printer is a four-colour EcoTank, because the bottle will not fit. Offices that print only text are better served by a dedicated monochrome ink tank printer, and Mascom International can recommend one that suits your volume.
Can I pay for the Epson T6731 Black Ink Bottle by M-Pesa when it arrives?
Yes, you can pay for the Epson T6731 Black Ink Bottle by M-Pesa or cash when the parcel reaches you, anywhere in Kenya. Mascom International runs pay-on-arrival delivery, so you open the package, confirm the factory seal and the T6731 code on the box, and only then pay. If you would rather buy in person, the Kimathi Street store accepts M-Pesa and cash across the counter, and staff will check your printer model against the bottle before you leave.
Technical Specifications
Ink Formulation and Colour Role
- Dye-based black ink absorbs into the paper surface, giving smooth gradients on glossy stock and clean lettering on plain sheets.
- Black is one of six colours in the set, alongside cyan, magenta, yellow, light cyan and light magenta.
- It prints all body text, table borders and signatures, making it the tank that drops fastest in mixed use.
- In photographs it deepens shadows, defines outlines and anchors hair and fabric detail so images do not look washed out.
- Dye ink is less water-resistant than pigment, so laminate or sleeve documents that will face rain or frequent handling.
Printer Compatibility
- Fits the EcoTank L800 six-colour photo printer directly from the bottle, with no adapter or syringe needed.
- Works in the EcoTank L805, the wireless version that lets phones and laptops send photos over Wi-Fi.
- Suits the EcoTank L810 and L850 photo models, which draw from the same six-bottle ink set.
- Compatible with the wide-format EcoTank L1800, so studios printing larger photo enlargements use the same black bottle.
- Not compatible with four-colour EcoTank models such as the L210 or L3150, which use a different bottle and ink code.
Capacity and Page Yield
- Each bottle holds 70ml of black ink, sold as a single refill for the black tank on these printers.
- Epson rates the yield at roughly 1,900 photos in 10x15cm format, the standard postcard print size in most studios.
- That figure is extrapolated from ISO/IEC 24712 test patterns, the industry method for comparing ink yields fairly across brands.
- Real yield varies with page coverage, print quality mode and how often the printer runs head cleaning cycles.
- Dense documents such as spreadsheets and bank statements use more black per page than short letters or memos.
Running Cost Arithmetic
- At KSh 2,400 for 70ml, black ink costs about KSh 34 per millilitre, a useful figure when comparing refill offers.
- Across 1,900 rated photos, the black share of each 10x15cm print comes to roughly KSh 1.26 per sheet.
- Buying black as needed rather than a full six-bottle set spreads the cost, since black runs down first.
- Genuine ink reduces wasted cleaning cycles caused by clogged nozzles, which quietly consume ink from every tank at once.
- A cyber or studio can divide the bottle price by its own monthly output to set an honest per-page charge.
Bottle Design and Refilling
- The bottle arrives factory sealed, so you can confirm it has never been opened or diluted before purchase.
- A narrow nozzle lets you pour ink into the black tank slowly, reducing spills on the desk and printer body.
- The T6731 code and colour name printed on the bottle and box make matching the correct tank straightforward.
- Keep the cap tightly closed between refills so the remaining ink does not dry out or collect dust.
- Fill with the printer on a level surface and stop at the upper line marked on the tank to avoid overflow.
Storage and Shelf Life
- Store sealed bottles upright in a cool, dark cupboard, away from direct sun and heat from other office equipment.
- Use the ink before the date printed on the packaging for the best colour accuracy and smooth flow.
- Once opened, finish the bottle within a few months, since air exposure slowly changes the ink's consistency.
- Keep bottles out of reach of children and pets, and wash skin with soap if ink spills on it.
- Holding one spare bottle lets you refill immediately when the black level nears the lower line on the tank.
Package Contents
The Epson T6731 Black Ink Bottle comes in Epson retail packaging, factory sealed, exactly as it leaves the supplier. Inside you receive:
- One 70ml bottle of genuine black dye-based ink
- Epson retail box showing the T6731 code and colour name
- Handling and safety notes printed on the packaging
The bottle is sold on its own. The five colour bottles in this set are stocked separately at Mascom International, so you only buy the colours your printer actually needs.
Warranty
Mascom International covers the Epson T6731 Black Ink Bottle with a 6-month warranty on manufacturing defects, including a bottle that arrives leaking, underfilled or with a broken factory seal. Report any fault with your receipt at our Nairobi CBD service desk or on WhatsApp, and we replace the bottle. Ink used in an incompatible printer is not covered.
Where to Buy the Epson T6731 Black Ink Bottle in Kenya
Epson T6731 Black Ink Bottle is available now at Mascom International, Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Our doors are open Monday through Saturday, 9:00 AM to 7:00 PM, so you can inspect the seal and the T6731 code before paying. Colour: Black, with T6732 Cyan, T6733 Magenta, T6734 Yellow, T6735 Light Cyan and T6736 Light Magenta stocked as separate bottles.
Order through any of the following:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Mascom International ships the Epson T6731 Black Ink Bottle across all 47 Kenyan counties with pay-on-arrival delivery, so you pay only when it reaches you. Nairobi and its environs receive same-day delivery. Nakuru, Eldoret, Kisumu, Mombasa and every other major town receive it within 1 business day. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days.
Each bottle is backed by the 6-month warranty above, with any claim handled at our Nairobi CBD service desk.
Printer owners across Kenya rely on Mascom International for genuine consumables, straight answers about compatibility, and help on WhatsApp whenever a refill does not go to plan.
Disclaimer: We can not guarantee that the information on this product is 100% correct
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