Q: I have 6-7 hp inkjet cartridges No. 56 and No. 57 . They are in there original cartridge cases sealed. How long will they last without opening them. Will they dry out? Any advice helpful.
A: As long as they are kept sealed and in decent temperature (too hot or too cold will affect them) they can last for years. I stocked up on my printer cartages three years ago and they are all still good. I just recently changed my black and color cartages yesterday. The ink works fine.