[Meta] the concentration rule is doing its job and people should stop complaining
the concentration rule is doing its job and people should stop complaining — with the counter-argument included, because I find it fairly persuasive. Wrote the date on the vial as well as the concentration after losing track of which one was opened first. Asked MKM what volume they reconstitute to for their own…
Aim the stream down the wall of the vial rather than into the cake. Reconstitution is a solubility problem, not a mixing problem, and mechanical shear does nothing helpful.
Aim the stream down the wall of the vial rather than into the cake.
Adding one thing — put the date on the label too. Concentration plus date and you can never mix two vials up.
I would not round that figure. At 30mg/mL a rounding error of two units is a real fraction of the intended amount.
Reconstituted at 3mL when I meant to use a different volume. Caught it because the units looked wrong on the barrel. Now I write 10mg/mL on the glass before I put the cap back.
That is sterile water, not bacteriostatic. Same appearance, different product, and it matters for a multi-draw vial.
the number you write down is the number you will trust at 6am
a U-100 syringe reads 100 units to the millilitre, every time
Research-use-only material is not approved for human use, so treat everything in this thread as arithmetic about solutions rather than instructions for a person.
What concentration did you actually reconstitute at, rather than what did you intend to?