for: clp-320/clp-325/clx-3185 series the twin pack of genuine samsung black toner cartridgees (1,500 pages per cartridgee) was developed for use in your samsung printer to deliver quality print results. you get top performance, 100% reliability and impressive quality every time you print. specially optimized for unrivaled quality. with a pack of 2 genuine samsung toners, your prints will have crystal clear details and vivid colors. even small text is sharp and easy to read. trust only original samsung toner cartridgees always use genuine samsung toners to avoid damage to the printer and other problems. black press technologylaser yield (combined) per cartridgee: 1,500 pages in black and white annotation on page yield declared yield value conforms to iso/iec 19798. operating environment, print interval, graphics, media type, and media size can affect actual page count. operational requirements operating temperature range 10 to 30 ? c operating temperature range 50-86 ? f storage temperature range -20 to 40 ? c storage temperature range -4 to 104 ? f storage humidity 10 to 90% rh