posted Sat, 08/01/2015 - 07:49
1346
Can TB500 be frozen after reconstituting?
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Can TB500 be frozen after reconstituting? I need to use 5mg TB500 vial for a month.
I'm using sodium chloride (isotonic water, NaCl 0.9%)
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I don't think you should freeze it. NS (isotonic saline), bacteriostatic water and other aqueous solutions freeze in a crystalline formation that may damage the molecular structure of the peptide. Although, I have no proof saying that it WILL.
Also, using NS isn't ideal for long term storage of peptides, or any other hydrophilic substance. NS contains no bacteriostatic/bacteriocidal attributes. In short, there's nothing (benzyl alcohol, ect) stopping bacterial colonization.
StevebI don't know but if shaking it can damage it then freezing it would seem worse since everything expands.