* Try Agritone, HP 39a Bio Toner, Bio Black Cartridges * This bio toner has been inserted into HP 4300 toner cartridges and offers the imaging industry's highest concentration of bio content * Agritone branded cartridges are an eco friendly alternative to HP toner that is petroleum based and no adjustments are needed to any HP printer so as to insure a reliable print performance. Agritone eco toner contains bio black toner. The resin used to produce bio black toner is known as biorez, containing 60+% bio content, while bio black in toner form contains 35+% bio content * It is time we do all that we can to reduce our reliance on petroleum and petroleum based products by using and promoting products developed from renewable agricultural materials such as soy, corn and cottonseed. Less reliance on petroleum toner and utilizing remanufactured plastic cores is one step toward helping to reduce global warming, lowering our carbon footprint, while, also, helping to stabilize oil prices. Furthermore, the use of bio toner in these eco friendly products has been known to make the process of recycling paper easier, so why not purchase Agritone bioblack, bio toner cartridges for a green office * These compatible, HP q1339a, cartridges are designed for use within HP 4300, 4300dtn, 4300dtns, 4300dtnsl, 4300n and 4300tn printers * Page yield @ 5% coverage: 20,000 pages * These bioblack cartridges are warranted for 1 year and contain a new, longer life, drum so as to insure optimal performance * Made in America * Free UPS or FedEx Ground * US SALES ONLY - IN STOCK