#reconstitution 2025-05-27

the meniscus thing is real. read it at eye level or you are guessing by a unit either way

check your maths

30mg in 3ml is 10mg/ml, so 5mg is 50 units. half the barrel, feels like a lot but its right

i was wrong about this last year: it is fine to draw cold, it just stings more going in, anyway

one unit is 0.01ml

why does everyone say 2ml specifically and not 1ml

weighing the vial before you reconstitute is the only way to catch an underfill

aim the diluent at the glass wall, not at the powder. it goes in gentler

15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it

Reminder set. I will post here in 9 days.

is the meniscus reading actually a real source of error or am i overthinking

it foamed. is it ruined

a slightly collapsed cake is cosmetic. a puddle in the bottom is not

i have never once regretted using a rounder number and a slightly bigger volume

foam is bad

took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience

can i add more bac water later to a vial ive already reconstituted

dead space

i swirl for about thirty seconds and then leave it. never had one fail to dissolve

i use bac water even for a single-use vial because it stings less, which is not the reason it exists

is a slightly cloudy solution ever ok or is that always a bin it

read it at eye level

bac water or sterile water for something im going into weekly for 7 weeks

yep 10 units

10mg in 2ml is 5mg/ml. so 0.5mg is 0.1ml which is 10 units on a u100

while im here 10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use

if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way

gross powder mass is not net peptide. water and counterion are in that number

clear or bin it

i keep a spare vial of bac water in the fridge purely so i never rush the maths

coming back to this the last few units are a real loss. i accept it rather than tilting the vial and drawing air, for what its worth

update on the earlier thing pick the volume so your dose is a whole number of units. thats the entire trick, still working it out

too dilute imo