Sustainable Earth CSEB03AR Black Toner Cartridge has a printing life of up to 4,000 pages at 5% coverage and is compatible with the HP C3903A. Sustainable Earth toner cartridges are designed to be a quality alternative to the OEM product whilst offering significant cost savings. They are produced via eco-preferable manufacturing processes and product components, including packaging made from recycled materials. Sustainable Earth cartridges are certified to ISO 9001:2000 standards, which ensures high-quality printing with no spotting, smudging or fading.