Hello, [...].
Thank you for the clarification regarding the alcohol. Your procedure should work. However, here is an alternative approach for your consideration that is somewhat less laborious and prone to measurement error.
GearWater source container (e.g. a measuring cup; glass with a pouring spout)
Mixing/drinking container
- glass, wide mouth (to allow quick/easy measuring of the reduction amount with the syringe)
- approx 100-120mL capacity*
- leakproof lid
*In the US, 4oz glass mason jars with lids and 4oz glass baby food jars with leakproof lids are available (4 ounces is about 118 milliliters).
Graduated cylinder (this may come in handy later if you need to make a more dilute liquid)
- ATSM, Class A, Tolerance +/- 0.25mL, Borosilicate glass
- 50mL with graduations every 0.1mL
Oral Syringes
- 1mL, 3mL or 5mL, 10mL
Other
- Permanent marker
- Clear tape
- Dropper (optional)
Procedure- Pour approx. 200mL of water into the water source container.
- Measure 49mL of water using the graduated cylinder. See link below for a tutorial.
- Pour the water from the cylinder into the mixing/drinking container.
- Measure 0.5mL of water using the 1mL syringe.
- Dispense the water in the syringe into the mixing/drinking container.
- Mark the meniscus at 49.5mL on the mixing/drinking container with a permanent marker.
Repeat the above steps several times until you are confident you have calibrated the mixing/drinking container at 49.5mL. Put a piece of clear tape over the calibration mark to prevent it from rubbing off.
After you have calibrated the mixing/drinking container, all you have to do to mix another batch is pour water into the container until it’s close to the meniscus. Next, you would use one of your syringes (or a dropper) to slowly add water until it reaches the meniscus. Finally, you would add 0.5mL of your concentrated diazepam oral solution to the water then follow the steps I outlined earlier.
In response to your questions plus a request and a note ….
(1) No, the syringes do not need to be sterile.
(2) Yes, you may reuse syringes. However, the syringes will wear out over time. See link below for more information about using syringes. (Tip: Putting a piece of clear tape over the graduation marks will prevent them from being rubbed off.)
(3) My request: Did you mean to write PG (propylene glycol) instead of PEG (polyethylene glycol) in your latest post? If so, would you be so kind as to change this to prevent confusion on the part of other guests/members? We’ve had at least one member who (mistakenly) thought he could use Miralax — an over-the-counter laxative that contains PEG — as the solvent for a homebrew liquid.
(4) My note: I have several real world issues requiring my attention so my time on the forum will be limited for the next several days. If you have additional questions, I’m confident other members will step in to answer them.
LinksGraduated Cylinder Technique
https://youtu.be/eUIcebi1GVcUsing Syringes | The Withdrawal Project
https://withdrawal.theinnercompass.org/taper/using-syringes