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**LLLLern** · 07-03-2008, 08:20 PM

General info on making oil based injectable solutions

There's really not much to this at all. The only thing that varies is the percentage of solvents used. The rest of the procedure is always the same.

For long esters like enanthate not much is needed. I have made testosterone enanthate with 1% BA only for a friend and there were no problems whatsoever. The solution will be unnecessarily thick though, so for my stuff I always put 3-5% BB in everything.

---EDIT--------
I recently shot some of the 1% BA only testosterone enanthate and it tends to be a painfull injection, especially in the quads it's kind of crippling.

For shorter esters (propionate, phenil-propionate and acetate) something like 1-5% BA and 7-15% BB will do for concentrations of up to 100 mg/ml. Higher than that and it usually gets painfull.

The procedure is quite simple and the material needed readly available.

You need:

-A scale accurate to either 0.1 gr or better yet 0.01 gr. The second one will allow you to measure as little as 100 mg with a 10% error margin, which I find tolerable. For injectables you are probably always weighting at least a couple of grams so a 0.1 gr scale should be fine.

- A syringe filter, either a 0.45 or 0.2 micron pore diameter. The 0.2 should produce a sterile finished product, at least in theory, since no bacteria or spore is supposed to be able to get trough the membrane. It also makes filtering larger quantities a pain in the ass and takes a lot more time. A 0.45 might not be so effective but since the BA is supposed to be able to sterilize the solution by itself (see http://www.cuttingedgemuscle.com/Fo...cohol+sterilize), a .45 should be fine.

- Sterile sealed vials and at least one unsealed one of identical volume and shape. The unsealed one is usefull in measuring the volume of the solution. Some people just use a 0.85 ml per gr of powder to calculate the volume that each gram of powder will take. This probably will not result in a large margin of error, but to be really accurate you should fill up the unsealed vial with the same volume as the desired total in your injectable solution, mark this vial with pen, and when you are filtering you should place this unsealed vial next to the sealed one and fill it up untill you reach the height of the mark in the unsealed one. I plan on making a post with more detailed instrctions and with pictures later on.

- Various syringes, preferably not larger than 10 ml. The Larger the syringe, the less pressure will be created inside by the force you apply on the plunger. 10 ml ones are a good compromise.

- Some needles, one 25 gauge to keep the pressure inside the sealed vial from going up, which would make the filtering a lot harder and would push some solution out of the whatman everytime you exchanged the syringe attached to it. This has happened to me and I only realised what was wrong almost at the end of the conversion, so don't forget it. You will also need something like a 19-21 gauge to attach the filter to.

- The oil and solvents.:

-For oil most oils sold on aromateraphy sites will do, like soy, cottonseed, grapefruit, etc... You don't have to buy sterile oil. It will be mixed with contaminated material anyway (the powder) and I have my doubts a bottle of oil with no preservative whatsoever will keep sterile for long.

- For solvents you'll need at least benzyl alcohol. Like I said before you won't really need nothing more for long esters, but I recommend using some BB always. 2% BA should be ok, probably even 1% and 5-15% BB depending on ester type

cut and paste

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