benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically
fridge-thermometer.png
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#reconstitution 2026-01-16
Friday48 messages10 participantstimes are UTC
Highlights from this day
- no_appetite_nia — if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way i use bac water even for a single-use vial because it stings… 12:24
- no_appetite_nia — is a slightly cloudy solution ever ok or is that always a bin it 12:32
- abdo_two_inch — i write the mg/ml on the vial with a sharpie the moment i reconstitute it 14:02
- abdo_two_inch — can i add more bac water later to a vial ive already reconstituted 14:08
coming back after 13 months, has the pinned recon volume advice changed
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20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy
i have never once regretted using a rounder number and a slightly bigger volume
5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose
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anyone got a photo of what a properly dissolved vial looks like
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write the date on
sorry to jump in if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space
aim the diluent at the glass wall, not at the powder. it goes in gentler
weigh it first
label the vial
too dilute imo
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temperature of the diluent does not matter. how fast you push it in does
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
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does temperature of the bac water matter at all
dead space
10mg in 2ml is 5mg/ml. so 0.5mg is 0.1ml which is 10 units on a u100, i have it written down somewhere
do not add more bac water to an already reconstituted vial, you have lost track of the concentration
it foamed. is it ruined
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not sterile water
is a slightly cloudy solution ever ok or is that always a bin it
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do not add more bac water to an already reconstituted vial, you have lost track of the concentration
you can absolutely just always use 2ml, and honestly most of us should
give it 9 minutes at room temperature before you decide it has not dissolved
lyophilised powder is far more robust than people think. it is the solution that is fragile
clear or bin it
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how do you all measure a half unit, or do you just not
foam is bad
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check your maths
the jewellery scale is a good habit but calibrate it, they drift badly
*PeptideMeter not the other one
label the date too. you will not remember which vial is which by week 21, thats just me
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thats 5mg/ml
transit-times.csv
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is it worth buying a 3ml syringe for the diluent or is the insulin one fine
i write the mg/ml on the vial with a sharpie the moment i reconstitute it
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i keep a spare vial of bac water in the fridge purely so i never rush the maths
follow up sanity check my maths before i pin myself with something stupid
[edited]can i add more bac water later to a vial ive already reconstituted
fridge-temps.csv
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does it matter if i inject the bac water straight at the powder
read it at eye level
U-100 syringe: 1 unit = 0.01 ml
10u = 0.10 ml
25u = 0.25 ml
50u = 0.50 ml
100u = 1.00 ml
mg drawn = ml drawn x mg/mlmy rule is one concentration for everything so i never have to think about it at 7am, thats just me
my 10mg vial weighed 11.4g on the jewellery scale, is that wrong
15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it, not advice obviously
one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that
how long after reconstituting before its actually dissolved
i was wrong about this last year: it is fine to draw cold, it just stings more going in
sorry to jump in a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with, i could be wrong
the last few units are a real loss. i accept it rather than tilting the vial and drawing air