Here’s one with some vital information for you:
This thread is not about benzodiazepine usage but rather the preparation of a proper volumetric benzo solution (or any solution for that matter, but I'm mainly concerned with benzos in PG for the purposes of this thread). I don't encourage benzodiazepine use in any way - physical dependence WILL result from extended, regular usage of benzos and the withdrawals can be life threatening. That being said, let's get into it.
So I decided to make this post because I see a large number of people trying to make benzo solution using some form of alcohol. Now if you have lab grade ethanol, ~99% (WITHOUT added benzene in it or any other additive that's meant to make the liquid inconsumable), this thread isn't directed at you - go ahead and continue to make your solutions how you like.
Almost everyone else that is attempting to use alcohol as a benzo solvent will be using grain alcohol or the like (only 95% alcohol, 5% water - 5% can make a huge difference). If you have access to propylene glycol (which you likely do if you're able to source benzodiazepine RCs from the internet), then you have absolutely no reason to use everclear as your solvent; PG is better in every way.
The basic idea of volumetric dosing is that you take a certain, known mass of your desired chemical (let's say 1000mg of diclazepam) and you dissolve it into a known amount of propylene glycol (let's say 100mL for easy math). The solution you produce will be 10mg/mL. Propylene glycol is a GI irritant in large quantities so I'll always suggest that you make your solution as concentrated as possible without sacrificing your dosing comfortability. So, if you're using an oral syringe, you'll probably want to make a LESS concentrated solution than if you are using a dropper vial.
My personal recommendation is to use a dropper vial and as concentrated a solution as you can, effectively minimizing propylene glycol consumption (I usually achieve 10mg/mL with most benzos - diclazepam being a bit more finicky depending on the purity of your batch). If you don't have access to a real rubber topped glass/plastic dropper vial (which, again, I don't see why you wouldn't) then you can use an empty eyedropper container (just make sure you clean it out and redry it first). The functionality is the same. First thing you do before actually mixing any drugs is to do a statistical test to make a good estimate of how much PG your dropper dispenses PER DROP. The easiest way to do this is to measure 1mL of PG and then use the dropper to drop that entire mL into another clean vial counting the drops it takes for all the liquid to be dispensed. Repeat this process 5-10 times and take the average. This will give you a fairly accurate measurement of how much liquid your particular dropper dispenses (For reference, your standard eye dropper dispenses ~20 drops per mL, and some rubber headed dropper vials will give up to 30 drops per mL). Make sure you use your intended solvent (Again, pure PG for benzos) for this test, as viscosity will affect your results.
Now you can calculate your mg/drop dosage, which then can be labeled on your dropper container so that you don't need to go about doing unnecessary recalculation. For example, if you have a 10mg/mL solution in a dropper that dispenses 20 drops, then you're going to be getting 0.5mg/drop. If you've been using a calculator throughout this process, which I certainly recommend you do, and you come up with an ugly decimal number you should choose 2-3 significant digits and ROUND DOWN for [drops/mL] or ROUND UP for [mg/drop] as a safety precaution. This makes the assumption that your solution is more concentrated than it actually is - an obvious HR tactic.
With all that out of the way, you can now add your active solution to your dropper container and you should be able to quickly and easily dispense a desired dose, just remember (and preferably label your container with) your mg/drop figure. That's all there is to it, folks.
TL/DR:
Stop using everclear as your benzodiazepine solvent. Propylene glycol is vastly superior in that it doesn't contain water - water being the main culprit of solute precipitation causing hotspotting and/or changes of your solution concentration.
Spend the extra little bit of money/effort to get PG to make your solution with. It's worth it 100%.
