High Capacity SL-870-1 XXL Red Ink Cartridge - High Yield
High Capacity SL-870-1 XXL Red Ink Cartridge - High Yield
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In this review the High Capacity SL-870-1 XXL Red Ink Cartridge is assessed for small offices and postage machine users who need bright, readable impressions. The cartridge is a compatible replacement for the New SendPro Mailstation (CSD1) and promises a high page yield and vivid fluorescent red output. For those who prioritize clear, high-definition red impressions and a straightforward one-pack replacement option, this cartridge deserves consideration; if longevity under heavy daily use is critical, users should weigh mixed reports about durability.
Key Features
- Compatibility: Designed to replace the SL-870-1 cartridge in SendPro Mailstation Postage Machines (CSD1), so installation is usually straightforward when the model matches.
- High-Definition Printing: Uses imported ink formulated for brighter color saturation and improved fidelity, resulting in clearer red impressions on postage and labels.
- High Page Yield: Each 16 ml cartridge is rated for up to 1000-1600 impressions, offering a higher yield per cartridge than many standard replacements.
- Leakproof Testing: The cartridges are described as strictly tested for leakproofness to reduce the chance of mess during handling and installation.
- Simple Packaging: The single-pack format contains one red cartridge, which makes it easy to keep a spare on hand without bulk.
Who It's For
This cartridge is best for small offices, mailrooms, and home business users who operate SendPro Mailstation Postage Machines (CSD1) and need a vivid fluorescent red for postage marks and labels. It suits customers who want an affordable compatible option with a stated high impression yield and strong color saturation.
Users who process very high daily volumes or require long-term heavy-duty durability might look elsewhere or keep extra spares, since customer feedback includes mixed notes about lifespan and occasional functionality problems. Always confirm your printer model before purchasing to ensure proper fit.
Pros & Cons
Pros
- Bright, highly saturated red color improves legibility on postage and labels.
- High impression yield of roughly 1000-1600 per 16 ml cartridge reduces frequency of replacements.
- Leakproof testing lowers the risk of spills during handling and installation.
Cons
- Some users report mixed durability and occasional functionality issues, so performance can vary between units.
Specifications
| Product type | Replacement red ink cartridge for postage machines |
| Compatible models | SendPro Mailstation (CSD1), SL-870-1 replacement |
| Color | Fluorescent red |
| Volume per cartridge | 16 ml |
| Yield | Approximately 1000-1600 impressions |
| Package contents | 1-pack red ink cartridge |
| Quality notes | Imported ink, tested for leakproofness |
Our Verdict
The SL-870-1 XXL red cartridge is a sensible value choice for SendPro Mailstation owners who need vivid, high-definition red impressions and a higher-than-average yield from a single 16 ml pack. It offers bright color and leakproof testing, though buyers should confirm model compatibility and be aware of mixed reports on long-term durability before committing for heavy daily use.
Frequently Asked Questions
Will this cartridge fit my mailstation?
It is made as a replacement for the SL-870-1 used in New SendPro Mailstation (CSD1); confirm your printer model before ordering.
How many impressions will one cartridge produce?
The manufacturer states an estimated yield of about 1000-1600 impressions per 16 ml cartridge.
Is the ink prone to leaking?
The product notes strict leakproof testing and uses imported ink to reduce spill risk, but handle with care during installation.
Editor's Take
The SL-870-1 XXL red cartridge delivers bright, high-definition fluorescent red impressions and a high yield from a 16 ml pack, making it good value for SendPro Mailstation users who confirm model compatibility, though long-term durability reports are mixed.

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