anyone got a photo of what a properly dissolved vial looks like
#reconstitution 2025-04-20
Sunday47 messages9 participantstimes are UTC
Highlights from this day
- VialBot — New independent result logged — QST, lot G-0641, purity 98.1% (Janoshik). 21:09
- maintenance_mo — my vial pulled the water in on its own, is that the vacuum or did i do something 22:18
- maintenance_mo — do not add more bac water to an already reconstituted vial, you have lost track of the concentration 22:34
- van_isle_vial — is a slightly cloudy solution ever ok or is that always a bin it 23:52
do you draw up with the same pin you inject with
temperature of the diluent does not matter. how fast you push it in does
20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy
how much do i lose to dead space with a 30G pin
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
gross powder mass is not net peptide. water and counterion are in that number
why does everyone say 2ml specifically and not 1ml
one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that
if i add 2.5ml to a 15mg vial what concentration am i actually at
you can absolutely just always use 2ml, and honestly most of us should, ask me again in a month
does temperature of the bac water matter at all
nope, redo it
i was wrong about this last year: it is fine to draw cold, it just stings more going in
New independent result logged — QST, lot G-0641, purity 98.1% (Janoshik).
the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol
10mg in 2ml is 5mg/ml. so 0.5mg is 0.1ml which is 10 units on a u100
i keep a spare vial of bac water in the fridge purely so i never rush the maths, thats one data point
10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use
5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way, still working it out
thats fine
is it worth buying a 3ml syringe for the diluent or is the insulin one fine
yep 10 units
can i add more bac water later to a vial ive already reconstituted
a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with
how do you all measure a half unit, or do you just not
for the archive is the meniscus reading actually a real source of error or am i overthinking
is there any reason not to just always use 2ml
the meniscus thing is real. read it at eye level or you are guessing by a unit either way
coming back after 14 months, has the pinned recon volume advice changed
bacteriostatic water for anything multi-use. sterile water has no preservative in it at all
label the vial
if the maths gives you 13.7 units, change the volume. do not try to hit 13.7, for what its worth
do you let it come to room temp before drawing or draw it cold
whats the smallest volume you would trust yourself to measure on a u100
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weighing the vial before you reconstitute is the only way to catch an underfill
update from 10 months ago: switched to a single concentration and have not miscalculated since
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it should be completely clear with no floaters. cloudy means stop
my vial pulled the water in on its own, is that the vacuum or did i do something
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do not add more bac water to an already reconstituted vial, you have lost track of the concentration
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clear or bin it
does benzyl alcohol matter if im finishing the vial in one go
30mg in 3ml is 10mg/ml, so 5mg is 50 units. half the barrel, feels like a lot but its right
foam is bad
is a slightly cloudy solution ever ok or is that always a bin it
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