Epson WorkForce 645 Ink Cartridges
Shop ink cartridges for your Epson WorkForce 645, which uses the Epson 138 ink cartridges series. Ink Depot has supplied quality ink for this desk-friendly office printer since Nov 2013. Document-intensive tasks deplete the C13T138192 black unit rapidly compared to the C13T138292 cyan, C13T138392 magenta, and C13T138492 yellow cartridges. Our 4.8 Google rating reflects a long-standing track record of premium cartridge performance.
Expected page output and replacement cycles
Epson calculates cartridge capacity using the ISO/IEC 24711 standard for inkjet printing. Page output varies depending on image coverage, document layout, and printing frequency. Replacing individual colour cartridges as they deplete ensures full ink usage without wasting remaining colours.
| Cartridge Number | Type | Colour | Page Yield | Cost Per Page |
|---|---|---|---|---|
| 138 | High Yield | Black | 380 | $0.035 |
| 138 | High Yield | Cyan | 420 | $0.032 |
| 138 | High Yield | Magenta | 420 | $0.032 |
| 138 | High Yield | Yellow | 420 | $0.032 |
Cost Per Page = Total Cartridge Price ÷ Page Yield (at 5% coverage). Prices based on Compatible cartridges.
Choosing compatible cartridges
Under Australian Consumer Law, using compatible cartridges does not void your printer warranty. Installing high-grade compatible 138 ink cartridges provides reliable print quality while managing everyday expenses. To learn more about performance, read our genuine vs compatible cartridges comparison.
Choosing the right cartridge setup
If you print mainly text documents, keeping an extra C13T138192 black cartridge on hand prevents unexpected downtime. Multipacks are ideal if you regularly produce colour reports and graphics. All compatible cartridges come backed by a money-back guarantee for peace of mind. Free delivery applies on all orders over $99, dispatched quickly from our warehouses in Perth, Brisbane, Sydney, Melbourne, and Adelaide. Browse our full range of Epson ink cartridges for dependable office printing solutions.
Cartridge Buying Tip
Always order a spare black cartridge alongside your colour sets, as black ink depletes much faster during routine office document printing.
Frequently Asked Questions
Can I replace an individual empty 138 cartridge without changing the whole set?
Yes, the Epson WorkForce 645 features individual ink slots for each colour. You only need to change the specific C13T138192 black, C13T138292 cyan, C13T138392 magenta, or C13T138492 yellow unit that has run low.
What standard determines the yield ratings for 138 ink cartridges?
Page yields for 138 cartridges are tested under the ISO/IEC 24711 standard, which uses standard test pages printed continuously until ink runs out. Real-world output depends on document text density and print settings.
Can I install compatible 138 cartridges alongside existing Epson cartridges?
Yes, compatible 138 cartridges are designed to operate alongside other installed ink units seamlessly in your printer without causing recognition issues.
