We need an expiration date for these, extremely important with activated charcoal filters. Several on the web are expired. What is the expiration?
896641
These things last almost forever as long as the original bag isn't torn through. Plus with a zip lock bag you can prolong there lives by storing them inside the bags. I'd contact customer service, tell them what serial numbers are on the packaging, and I believe they can help if you need anything else.
896642
The expiration dates will vary by lot. 3M says the use by date is 5 years from date of manufacture. But activated charcoal will last forever in sealed packaging.
1546325
You might want to ask the shipper. The expiration date will depend on the date the product was produced. I have been using these for a long time and have not had a concern with the expiration date.
177476
I think the expiration dates are about a year out, but I think they are still good as long as the "control" line shows up when used. If there is no control line, the drug test line isn't accurate.
246177
Whenever I have ordered these strips from Amazon, they have had at least 1-1/2 years expiration from the time I got them. Hope it helps
669261
I've been purchasing these for a long time from Amazon, and they are always well within their expiration date. The ones I have now expire late in 2015, but these might have an even better expiration date. I guess to get the exact answer to your question, you could call Amazon.
1866463
There is an expiration date but I don't see that it is listed for the batch they have.
932803
I bought mine a couple of months ago and they expire on 8/15. I have used expired ones in the past that have worked perfectly.
503157
I have purchased these for the past 2 years and each time the expirations have been at least 1 year out. You can buy them, see the dates and then send them back if you need to! I have never had an issue with this.
1535950
Wow, you are ambitious. January 2015 is the expiration date on my boxes. Enjoy!
300614
Vector butane does not come with an expiration date listed on it, it will last for many years. Jessica S., Customer Service
125848
I have gotten 2 boxes of these, both had different expiration dates. They were far enough out that there wasn't any concerns of not using them before they expired.
432565
This would be a question for the Seller (Amazon or whomever you purchase from).. I am just a consumer. I will say that the exp date on mine is out far enough for me that there isn't any chance they will reach expiration before I use them all.. (About 2 years).
2091322
The Carbon in these filters is also virgin charcoal (this just means that the carbon has been treated). They are rated to last up to 1.5 years. The fan also comes with a 1 year manufacturer warranty.
1980541
Hi Janice. I've always used them until they are gone. I have never seen an expiration date on them and I have never had any problems.
928522
Looks as if Robert answered your question on the expiration date, so I'll take the one on how long they're good for... virtually forever. I think the only reason they put expiration dates on something like this is to scare people into throwing away and replacing perfectly good products. I have some canisters that are many years past their "expiration" dates, and they still work fine.
664818
It is undetermined. The filters that come with the system have a ceramic exterior, and inside the filters you have activated carbon beads. The housing of the system is totally stainless steel with a few plastic pieces. The shelf life of all the materials would be well in excess of over 100 years. With that in mind, it is undetermined how long the shelf life could be.
1223243
Look on the top of the box for the expiration date. Don't use beyond that date unless you show with control solution they are still in range.