#reconstitution 2026-04-01

you can absolutely just always use 2ml, and honestly most of us should

anyone got a photo of what a properly dissolved vial looks like

ok so my vial pulled the water in on its own, is that the vacuum or did i do something

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

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

update from 14 months ago: switched to a single concentration and have not miscalculated since

why does everyone say 2ml specifically and not 1ml

how long after reconstituting before its actually dissolved

20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy

bac water

bacteriostatic water for anything multi-use. sterile water has no preservative in it at all

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

does benzyl alcohol matter if im finishing the vial in one go
the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol

pick the volume so your dose is a whole number of units. thats the entire trick

my 10mg vial weighed 11.4g on the jewellery scale, is that wrong

what do you do with the last 5 units when you cant draw them cleanly

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

label the date too. you will not remember which vial is which by week 6, ask me again in a month

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

swirl it. do not shake it. the foam is denatured protein and you are not getting it back

lyophilised powder is far more robust than people think. it is the solution that is fragile, your mileage will differ

is there any reason not to just always use 2ml

New independent result logged — WXT, lot C-4402, purity 98.1% (VendorInvestigate).

dead space

sanity check my maths before i pin myself with something stupid

round numbers

the last few units are a real loss. i accept it rather than tilting the vial and drawing air

if the maths gives you 13.7 units, change the volume. do not try to hit 13.7

the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol
a slightly collapsed cake is cosmetic. a puddle in the bottom is not

read it at eye level

do you draw up with the same pin you inject with

quick one temperature of the diluent does not matter. how fast you push it in does

slightly off topic but benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically, still working it out