ForumReconstitution & Math

Bad batch or wrong BAC?

20 replies11 peopleMay 2, 2026☆ Follow
Summary

Is my retatrutide turning cloudy because of the bacteriostatic water I used or because of a bad batch?

The discussion shows that bacteriostatic water containing sodium chloride causes retatrutide to precipitate and appear cloudy, while standard bacteriostatic water without saline produces a clear solution. Users who switched to the correct water saw clear results. A few also note that certain batches may have additional issues like TFA salts, and opinions vary on whether filtered cloudy solutions are usable.

What this discussion establishesWhere people disagree

Whether a filtered cloudy reconstitution is safe to use or should be discarded

Still open

How long various BAC waters remain good after opening and whether refrigeration helps

Nothing here is advice.

20 replies · 11 people
PlainMarble21archiveopening postMay 2

I ended up with the version of water that includes sodium chloride. Can this be used to reconstitute reta? My first 15 mg vial came out cloudy after mixing, though it might be from a known bad batch instead.

BlueSignal49archiveMay 2
↳ replying to @PlainMarble21 (opening post)

It will most likely be the water. It will sting a bit if you pin it.

SharpCinder28archiveMay 2

Reta tends to go cloudy when mixed with saline BAC, as you found out. Saline BAC works fine for tirz, sema, and some other peptides though. It is also possible to get a bad batch with TFA salt problems, but the saline BAC is the more common cause here.

SteadyMarble42archiveMay 2
↳ replying to @PlainMarble21 (opening post)

I have the same reta and it did the same thing. Mine went cloudy with little particles that later dissolved when I used that water. Adding a small amount of sodium bicarbonate cleared it up. Still, I am not injecting it, so try regular bac water and see if that changes anything.

SharpCinder28archiveMay 2

It could be both problems at once. I am staying away from the smaller sizes from any source now and only getting the larger ones. One smaller vial from an unknown source did mix fine though. If you want to test without regular BAC on hand, a local pharmacy might sell some, but they would likely realize what it is for.

PlainMarble21archiveMay 9

I bought the right water and mixed a new vial and it stayed clear.

GreyPebble84archiveMay 14
↳ replying to @SharpCinder28

I mixed a 40 mg vial with that water and it came out cloudy. It tested well for purity. Could this be a TFA salt issue? I filtered it and it cleared. Part of me wants to use it, but I am worried about side effects.

WarmAnchor46archiveMay 14

Here it is. A friend uses it for reta and suggested it.

ClearHarbour45archiveMay 14
↳ replying to @WarmAnchor46

You are fine. Many brands had testing problems last year but most improved after that. Yours was not on any problem list anyway. BAC is hard to get wrong.

PatientFenwick39archiveMay 14
↳ replying to @WarmAnchor46

That BAC looks questionable. I once bought some online and noticed debris right away so I did not use it. Two weeks later white strings appeared inside the vial. That was the last time I bought any from online sellers.

WarmAnchor46archiveMay 15

I'm trying to figure out what liquid to mix with instead. That preserved option just won't work for me.

GreyPebble84archiveMay 15

You can use bac water for reta. I have been using it for years. Your bac looks fine. Try it and see. If it stays cloudy with particles then you probably have a bad batch of reta. Just avoid any version that has sodium chloride.

WarmAnchor46archiveMay 15
↳ replying to @GreyPebble84

Thank you. I am new to this. Is it advisable to get the small vials of BAC from the sellers? I did not even know those sealed small vials existed.

BrightLantern89archiveMay 15
↳ replying to @WarmAnchor46

I have used it and still have bottles from a four-pack. It was one of the few that passed testing for pH and benzyl content. It has worked without issues. A 30 mg vial mixed with 1.5 ml of water is shown below.

BrightLantern89archiveMay 15
↳ replying to @GreyPebble84

Let’s not jump to conclusions about extra effects. You don’t know what you don’t know.

WarmAnchor46archiveMay 15

I hope you don’t mind the questions. Does BAC water keep better in the fridge? Is it sensitive to light and how long does it last once opened?

BrightLantern89archiveMay 15
↳ replying to @WarmAnchor46

Keep it at room temperature away from light and it should be fine. Use alcohol wipes before and after drawing, change needles for each draw, and it should last a couple months after opening.

PlainAlder11archiveMay 15

Ah, maybe one of these days. Completely slipped my mind.

RustQuill57archiveMay 15

Looked at bac water from a number of peptide sources. pH values fluctuate widely.

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