Small Guide: Mix
Recipe
Go to the recipe calculator page to determine what your recipe is.
The calculator will not tell you how much oil to add. This is intentional, however it may cause problems for your small scale brew if you donât have a scientific beaker with measurements on the side. If you do have a small graduated beaker, use that and follow the mixing guide on the recipe calculator page. Otherwise read below.
Mix Without a Graduated Beaker
You can work in a still air box if possible, but itâs not strictly required for the small guide.
Instead of using a graduated beaker, add the API and BB to your mixing container. Whatever volume of BB you added, add the same volume of your oil. Write down how much youâre adding in order to keep track of whatâs what. Now mix it up real good until the API is dissolved. If the API is refusing to dissolve fully after 5 minutes of stirring, go ahead and add a little more oil (keeping track of how much youâre adding).
Now you can draw your whole preparation up into a syringe or two. Use these to measure what the total volume of your preparation is. When you used the calculator you said what volume you are trying to brew, so this is the number your want to hit as a total volume. Add your benzyl alcohol, and then add the amount of oil to your mixing container that is needed to achieve this TOTAL volume.
Example:
Iâm brewing 25mL of 20mg/mL Estradiol at a theorized 100% purity.
The recipe calculator tells me to use:
- 0.5g Estradiol Enanthate
- 5mL Benzyl Benzoate
- 0.5mL Benzyl Alcohol
- Carrier oil fill to 25mL
So I add 0.5g of estradiol enanthate, 5mL of benzyl benzoate, and 5mL of oil to my mixing glass.
I mix this for five minutes. The estradiol isnât fully dissolved, so I add another 5mL of oil. The estradiol dissolves fully.
I suck up the preparation with two different 10mL syringes. I see that the total volume of the preparation is 19.5mL.
I add 0.5mL of benzyl alcohol to the mixing glass.
This brings the total volume up to 20mL. My target volume was 25mL. This means I need to add an additional 5mL of oil to the mixing glass.
I add all the preparation from my syringes back to the mixing glass and stir well. Mixing complete.
Cover the Preparation
As soon as the preparation is properly mixed cover it with aluminum foil to prevent any dust or bacteria from falling in.
âWhy is the Mixing So Complicated?â
The mixing is complicated because itâs difficult to determine exactly how much volume your API displaces. Using basic density measurements for the API proves to be ineffective with this. This problem is sidestepped using the above method.