how much of what we believe about concentration actually comes from reconstitution threads
Trying to get a straight answer on this: how much of what we believe about concentration actually comes from reconstitution threads.
Shook the first vial because nobody told me not to. It was fine, but I have swirled every one since.
I keep a laminated card in the drawer with the arithmetic on it. Looks ridiculous. Has never once let me draw the wrong volume.
Spent 17 weeks confused about this until somebody drew the table for me. 30mg, 1mL, 30mg/mL, 1.5mg is 5 units. That is the whole thing.
Corrections welcome, especially the pedantic ones. Pedantry is how this board earns its reputation.
best — the order this archive was captured in
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.
Why "more water" keeps confusing people, including me for a month.
The vial contains a fixed amount of peptide. Water changes nothing about that amount. What it changes is concentration, and concentration is the divisor between the dose you want and the volume you draw.
So doubling the water halves the concentration and doubles the units for the same dose. Nothing is diluted in any sense that matters; you are simply reading a bigger number off the same barrel. Pick the water volume that puts your usual dose on a whole number of units and life gets easier.
reconstituting at a round concentration makes every later dose easy
Same. I got this wrong once, caught it because the units looked absurd, and have written on every vial since.