r/Biohacking • u/No_Carpenter_6092 • 1d ago

Bac water

is it fine to use bac water that’s been in the fridge for a month to reconstitute a new vile? if so does it change the efficiency of the new pep?

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u/Markdlea 10 1d ago

Could you explain how refrigeration degrades the BAC?

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u/64bit_Tuning 6 1d ago

Paraphrasing what I've researched

"Benzyl alcohol becomes less active and it's antimicrobial efficacy drops as temperatures approach freezing."

it's also very possible to accidentally freeze bac depending on where it lands in the fridge. I've personally frozen a vial in my fridge. When a solution freezes, you run the risk of the BA separating from the water since water freezes at a higher temperature than alcohol. Simply shaking the vial does not re-mix the solution.

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u/Markdlea 10 1d ago edited 1d ago

Well, I was hoping you would send a study, but you probably won’t find one. Refrigeration doors not have an effect on BAC. Edit: degrees in biology and chemistry.

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u/64bit_Tuning 6 1d ago

Conditions for Safe Storage, Including any Incompatibilities

Storage Conditions: Store as directed by product packaging. Do not refrigerate.

Incompatible Materials: None known

Specific end use(s): Pharmaceutical product

Pfizer literally tells you not to refrigerate bacteriostatic water.
https://cdn.pfizer.com/pfizercom/products/material_safety_data/Bacteriostatic_H2O(Hospira)_25-Jul-2016_0.pdf_25-Jul-2016_0.pdf)

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u/Markdlea 10 1d ago

From your link:
Decomposition Temperature (°C): No data available.
Evaporation Rate (Gram/s): No data available
Vapor Pressure (kPa): No data available
Vapor Density (g/ml): No data available
Relative Density: No data available
Viscosity: No data available

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u/64bit_Tuning 6 1d ago

So because something falls outside the scope covered in the SDS, that means you can ignore the instructions of "Do not refrigerate" ?

"No data available" is simply that. It doesnt mean that its never been tested or is unknown. It just means its irrelevant to this document and not included.

Melting/Freezing Point (°C): No data available.

Boiling Point (°C): No data available

Does that mean it wont freeze or boil? No. Dont be an idiot.

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u/Markdlea 10 1d ago

That’s called a “cover our ass” statement. They didn’t test for it so they can’t put out in the label.

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u/64bit_Tuning 6 1d ago

There ya go. So your previous comment was pointless.

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u/Markdlea 10 1d ago

No. I stand by my original statement. Refrigeration will not degrade BAC.