What is the useful shelf life of these? About how long will they remain effective past expiration?
171266
Sorry, I can't help you with that questions. You should check with the seller or the manufacturer.
2111102
Not aware of any expiration dates- I assume most products would be used before such time
225306
They have a long shelf life. I just keep them unopened in the pantry. Once opened, I store the opened bag in a gallon ziplock bag for several months with no problem.
1825041
That's a reasonable question for the selling vendor, but Amazon forwarded it to other customers to answer! Since I bought mine months ago, I doubt that the expiration date on my box will help you. In my experience, the shelf life of these is near infinite BEFORE THE SEAL IS TAKEN OFF; they dry out or get gunked up if they sit in the printer too long after having been opened - that happened to me once on a color cartridge when I was printing mostly black.
563752
Hi, I just ordered some about 3 weeks ago and the expiration date was 4-15, so they will be good for over 1 year.
1337414
Not sure about the shelf life, but I've had mine up to two years if stored in a cool dry place .. maybe even longer, as they are sealed in plastic....
1123288
I have a expiration date of 04/2014. So they are still good for a while. You should get them used up by than.
1736858
Yes, the one I bought says to use by 03/16. Whether they would be effective after that is anyone's guess, but that is as long as the manufacturer claims for shelf life.
1791986
If there is an expiration date, don't worry; they won't last long enough to expire...they are that GOOD!
2281509
I bought some a few months ago (maybe 3?) and their expiration date is August 2015. I take two a day, so expiration date is not an issue, but it seems that they have about a two year shelf life.
765187
Look at the expiration date at the bottom of the box...then that's how long you can store them or use them before the said date.
1210951
Guaranteed Freshness thru July 2016, but that is the sell by date. They should not expire for at least 12 mo. after that.
266649
Didn't see an expiration date but my past experience says they are good for several years when stored properly. Too dry can make them brittle, too moist will shorten their life.
1844992
Hello Yi-ping LlaiI have already used these up and I'm sorry to say I do not have the expiration date available, however they seem to do the job and I had no problems with them.Hope this helpsRegards
1593482
I purchased mine about 6 months ago. Package says use by 9/2015 so I guess that was about 2 years shelf life. As others have stated these last much longer.
1981526
I don't recall the expiration date as I was using mine soon but I would expect it would be ok cause they are dehydrated so should last for a while I would think. Almost think you could "google" to find that answer.
1708987
If they in the SEALED package they should be good for at least a year. I have used last years leftovers with good results.