The page yield is based on an industry standard to calculate but does not guarantee that customers will experience the stated yield in actual use. Actual cartridge page yields are affected by printer used, types of pages printed [like photo vs letter], frequency of printing, print settings and other factors. HP participated in, supported the development of, and adopted the ISO/IEC 24711 standard for determining inkjet printer page yields. HP also participated in, supported the development of, and adopted the ISO/IEC 19752 and ISO/IEC 19798 standards for determining monochrome and color laser printer page yields.

Product Family:-

HP 504A Black Original LaserJet Toner Cartridge (CE250A), HP 504A Cyan Original LaserJet Toner Cartridge (CE251A), HP 504A Magenta Original LaserJet Toner Cartridge (CE253A), HP 504X High Yield Black Original LaserJet Toner Cartridge (CE250X), HP 504X 2-pack High Yield Black Original LaserJet Toner Cartridges (CE250XD).

Footnotes:-

1. For Original HP toner cartridges, HP offers a free and easy recycling service via HP Planet Partners. Programme availability varies, for details see hp/recycle. On recycled materials in cartridges, see hp/go/recycledcontent.
2. 2018 Four Elements Consulting LCA study, commissioned by HP, compared Original HP 80A and 83A monochrome toner cartridges with a sample of NBC alternatives across eight environmental impact categories. For more, visit hp/go/EMEA-LJLCA-NBC-2018. The LCA leverages a SpencerLab 2016 study, commissioned by HP, comparing Original HP LaserJet toner cartridges with three brands of NBC toner cartridges sold in EMEA. For details, see spencerlab/reports/HPReliability-EE-NBC2016.pdf
3. 2019 EMEA SpencerLab Monochrome Reliability study commissioned by HP. See spencerlab/reports/HPReliability-EMEA-2019.pdf
4. 2017 UL Blue Angel Indoor Air Quality compliance study, commissioned by HP. The study tested three remanufactured toner cartridge brands sold as substitutes for HP LaserJet Enterprise 500 Color M551 with cartridges: CE400A, CE401A, C402A, CE403A. The tests were carried out in compliance with the methods described in Appendix S-M of the RAL-UZ 171 Blue Angel award criteria. For details, see industries.ul/wpcontent/uploads/sites/2/2017/08/2017.08.Printers_Toner_Cartridges_IAQ_Alternate.pdf