Canon PG-575 / CL-576 Spongeless Refillable Options: Compatibility With PG/CL Cartridge Numbering by Region

Question

I found your kit about how to start making Canon spongeless refillable cartridges (PG-240/CL-241 and PG-245/CL-246). Do you have a version that works for Canon PG-575 and CL-576? For the past year I've been refilling by suctioning from the bottom, and I'm wondering what options are available. Thank you!

Answer

1) Do we have a spongeless kit specifically labeled for Canon PG-575 / CL-576?

Canon cartridge numbering can be confusing because Canon often sells essentially the same cartridge family under different PG/CL numbers depending on the sales region. So the best way to locate the correct match is not always by searching "PG-575 CL-576" alone.

What to do instead: go to BCH Technologies website (https://bchtechnologies.com) and search for the terms "275" and "276."
Those numbers are key because Canon commonly rebrands the same cartridge platform across regions, and the "x75/x76" family is frequently tied to the same underlying cartridge architecture as other regional equivalents.

2) Why Canon cartridge numbers differ by country (and how that helps you find the right kit)

Canon uses different prefixes and number ranges for cartridges that can be very similar internally (fitment, nozzle plate interface, ink chamber layout, venting, etc.). In practice, your PG-575 / CL-576 may correspond to a different-numbered set in another region, and kits/accessories are often listed under those alternate numbers.

Here are common regional equivalents you can use to cross-reference cartridge families:

• PG-145 / CL-146 (Central & South America)

• PG-245 / CL-246 (North America)

• PG-345 / CL-346 (Japan)

• PG-445 / CL-446 (Russia)

• PG-545 / CL-546 (Europe)

• PG-645 / CL-646 (Asia Oceania)

• PG-745 / CL-746 (Southeast Asia)

• PG-845 / CL-846 (China)

• PG-945 / CL-946 (Korea)

The reason this matters is that a "spongeless conversion" approach-especially the way the venting and ink delivery is handled-depends heavily on the cartridge family's internal structure, not just the printed number on the label. Searching by those alternate model numbers (and especially by "275/276" on our site) is often the fastest way to land on the correct kit or instructions for your region's cartridge.

3) You've been refilling by suctioning from the bottom-what should you know before switching to spongeless?

Bottom suction refilling can work, but it has a couple of common drawbacks that spongeless conversions are designed to reduce:

• Air ingestion and unstable flow: Suction methods can pull air through the nozzle plate or create pockets that later cause banding/missing lines.

• Nozzle plate stress: Frequent suction from the bottom can place repeated stress on the printhead/nozzle plate area, especially if strong vacuum is used.

• Ink mixing and contamination risk: If the cartridge isn't fully stabilized, you can end up with inconsistent density (especially in color) or debris movement.

Spongeless setups aim to produce more consistent ink flow and reduce issues caused by sponge saturation and uneven wicking, but they must be done correctly-especially with proper venting and a clean, controlled ink path-otherwise you can get leaks or starvation.

4) Quick guidance for finding the right product page on our site

To locate the correct kit for your PG-575/CL-576 family as sold in your region:

1. Go to BCH Technologies (https://bchtechnologies.com)

2. Use the search bar and try: 275, 276

3. Also try searching the regional equivalents listed above (for example PG-545 CL-546 or PG-645 CL-646, depending on where your printer/cartridges were purchased)

This approach usually gets you to the right product family faster than searching only the local cartridge number.

Addressing printer issues can be a complicated affair due to the hands-on nature of the problems. Because of that, we're not able to provide remote troubleshooting, suggestions, or support for printer repairs. We offer an in-person evaluation and repair service via our local diagnostic facility, Printer Repair Service (https://bchtechnologies.com/printer-repair-service). Given the high demand, we operate on a first-come, first-served basis, so it might take a few weeks before we can get your printer in for drop-off. Our services are structured to repair either a whole printer or specific parts, with clear instructions on how to proceed. However, we acknowledge that our rates aren't the most economical. Thus, we highly recommend that you resort to self-help via online research. You can start by checking out YouTube or visiting our YouTube channel's homepage, BCH Technologies on YouTube (https://youtube.com/@bchtechnologies). Look for specific videos using the search icon next to "About" on the right-hand side of the menu bar. I receive dozens of queries every day asking about videos for specific topics. Having created videos over the past nine years, it's challenging to remember every single one. Therefore, using YouTube's search function would be the most efficient. Plus, YouTube might suggest relevant videos from other channels that could assist you.

Thank you again for reaching out, and thank you for supporting BCH Technologies and our YouTube content. We truly appreciate it and hope this points you to the correct kit for your cartridge region quickly and safely.