We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Three sealed red fluorescent ink cartridges in white boxes with blue text

Pitney Bowes

Pitney Bowes SL-870-1 Red Fluorescent Ink Cartridge 3-Pack

SKU CH-97AT-NN9PK

Three red fluorescent ink cartridges for SendPro Mailstation postage meters yield up to 400–880 impressions each

  • TypeShipping Labels
  • Compatible with SendPro Mailstation CSD1 postage meter
  • USPS-approved red fluorescent ink for accurate postage printing
  • Yields up to 400-880 impressions per cartridge, matching OEM output
  • Three-cartridge pack reduces cost without voiding meter warranty
  • High-quality alternative manufactured under rigorous quality assurance testing

Red Fluorescent Postage Ink Cartridge

This three-pack supplies red fluorescent ink cartridges formulated for the SendPro Mailstation (CSD1) postage meter. Each cartridge is USPS-certified and carries the SL-870-1 compatibility designation. The set is intended for offices that process outgoing mail through a compatible Pitney Bowes meter and want a lower-cost supply option.

Fits SendPro Mailstation (CSD1) Meters

The cartridges install directly into the meter's ink bay without adapters or firmware changes. Using a compatible cartridge preserves the meter's original warranty, so no service agreement is affected. Each unit replaces the OEM SL-870-1 cartridge on a one-for-one basis, freeing budget for other mailing supplies.

Yields 400-880 Impressions Per Cartridge

Under normal daily mailing volumes, each cartridge delivers between 400 and 880 impressions before replacement is needed. The ink formulation is designed to maintain consistent print density across the full yield range, reducing the chance of faint or rejected postage marks during sustained use.

Highlights

  • Compatible with SendPro Mailstation CSD1 postage meter
  • USPS-approved red fluorescent ink for accurate postage printing
  • Yields up to 400-880 impressions per cartridge, matching OEM output
  • Three-cartridge pack reduces cost without voiding meter warranty
  • High-quality alternative manufactured under rigorous quality assurance testing

Specifications

TypeShipping Labels

Questions about this item

How many impressions can each cartridge deliver before it runs dry?

Each cartridge yields up to 400-880 impressions, matching the original equipment specification.

Does the red fluorescent ink generate extra heat or noise during long mailing runs?

The cartridge is a passive ink supply; it adds no heat, noise or power draw beyond the meter's normal operation.

Which postage meter must I already own for these cartridges to fit?

They are built for the SendPro Mailstation (CSD1) postage meter with SL-870-1 compatibility.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.