Overview HP 21 Ink Cartridges print polished, professional documents with laser-quality black text. HP ink cartridges are designed to work with your HP printer for the best results. Features Pigmented black inks provide crisp sharp text for your letters and reports. HP inkjet printing supplies and printers are designed to produce consistent results every time. Simple to install and easy to use, HP inkjet printing supplies are specifically designed to work with your HP inkjet printer. Specifications Color(s) of printing supplies Black Ink drop 17 pl Ink types Pigment-based Page yield (black and white) ~190 pages Page yield footnote Tested in HP PSC 1410 All-in-One. Approximate average based on ISO/IEC 24711 or HP testing methodology and continuous printing. Actual yield varies considerably based on content of printed pages and other factors. For details, see http://www.hp.com/go/learnaboutsupplies. Operating requirements Operating temperature range 15 to 35°C Storage temperature range -15 to 35°C Storage humidity 5 to 95% RH Dimensions and weight Package dimensions (W x D x H) 141 x 131 x 37 mm Package weight 0.06 kg