Oh that’s interesting! Thank youI wish I could find the FDA document calvarez linked on the old reddit sub, but it basically said that any substance that doesn't have a specific "use within x time after opening" notice on the label is assumed to be good for 28 days max, so it's pretty much a standard timeframe for all things lol.
I may give it a bit more time. My rat is a stuff old cookie.I’m not a doctor, not medical advice. I push mine to 2 months and no issues. Some folks go until it’s finished
@ZippityDooDah Good find Zip! I've been seeking the reason for the 28 day expiry for months now.I wish I could find the FDA document calvarez linked on the old reddit sub, but it basically said that any substance that doesn't have a specific "use within x time after opening" notice on the label is assumed to be good for 28 days max, so it's pretty much a standard timeframe for all things lol.
Found it: https://www.fda.gov/media/117883/download
Probably into mycologya laminar hood is definitely a plus but wait a minute why do you have a laminar airflow hood? curious mind wants to know
This may be the most valuable piece of@ZippityDooDah Good find Zip! I've been seeking the reason for the 28 day expiry for months now.
Interesting Note: Three days ago I was contacted by an anonymous individual who wanted a copy of my US Vendor spreadsheet; he was looking for a good, high-quality US peptide source so he could begin personal use. A long and engaging chat ensued.
I discovered he is a microbiologist managing a team of chemists at an (unnamed) three-letter health agency in Washingtonand a great guy!
Story short, we got around to discussing this "28-day bacteriostatic water expiry" controversy, and he didn't know how it originated either. Or where to find the source of the recommendation!
My assertion to him was this: a vial of bacteriostatic water in limited use by an individual with basic sterile technique and kept refrigerated in a typical residential refrigerator ("single-patient, multiple use" in FDA parlance) would be safe to use for a minimum of 90 days. He found no fault with that.
Further, I asserted that our individual use of a single vial for a single patient was of an entirely different risk profile than the "high-volume, multi-technician, many-patient, dozens of vial penetrations" use case that a 30ml vial of Hospira was intended for and for which a 28-day expiry would be approrpriate. He agreed that was so as well.
Not attributable so it's not authoritative but I thought you'd find it interesting.
Wow that's pretty cool!On a side note my son is a nerd in a good way but one of his elementary school science projects was swabbing his mouth then smearing it on agar plates. He soaked some kind of square paper in alcohol, listerine, cepacol, and scope i think and put it on the agar. the square with cepacol killed/inhibited microbial growth better than any of the others.
looks like somebody here also grows some good 'shroomsa laminar hood is definitely a plus but wait a minute why do you have a laminar airflow hood? curious mind wants to know