my vial pulled the water in on its own, is that the vacuum or did i do something
#reconstitution 2024-06-23
Sunday32 messages6 participantstimes are UTC
Highlights from this day
- still_here_2024 — why does everyone say 2ml specifically and not 1ml 15:01
- batch_bandit — give it 5 minutes at room temperature before you decide it has not dissolved, anyway 15:37
- batch_bandit — my rule is one concentration for everything so i never have to think about it at 7am 15:41
- tail_factor — coming back to this what do you do with the last 5 units when you cant draw them cleanly 16:15
bac water
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30mg in 3ml is 10mg/ml, so 5mg is 50 units. half the barrel, feels like a lot but its right
if the maths gives you 13.7 units, change the volume. do not try to hit 13.7
*PeptideMeter not the other one
nope, redo it
[edited]label the vial
why does everyone say 2ml specifically and not 1ml
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i write the mg/ml on the vial with a sharpie the moment i reconstitute it
dead space in a standard insulin syringe hub is small but it is not nothing over a month
15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it
clear or bin it
one unit is 0.01ml
lot-log.csv
184 rows · not retained in the public archive
not sterile water
thats the vacuum
weighing the vial before you reconstitute is the only way to catch an underfill
round numbers
too dilute imo
benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically
give it 5 minutes at room temperature before you decide it has not dissolved, anyway
weights-monthly.csv
621 rows · not retained in the public archive
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quick one the last few units are a real loss. i accept it rather than tilting the vial and drawing air
my rule is one concentration for everything so i never have to think about it at 7am
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pick the volume so your dose is a whole number of units. thats the entire trick
i have never once regretted using a rounder number and a slightly bigger volume, we shall see
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
read it at eye level
temperature of the diluent does not matter. how fast you push it in does
coming back to this what do you do with the last 5 units when you cant draw them cleanly
10mg vial
+ 1.0ml -> 10.0 mg/ml 0.5mg = 5u 1mg = 10u
+ 2.0ml -> 5.0 mg/ml 0.5mg = 10u 1mg = 20u
+ 2.5ml -> 4.0 mg/ml 0.5mg = 12.5u (dont)
+ 5.0ml -> 2.0 mg/ml 0.5mg = 25u 1mg = 50u🔥7📈1🎉3
a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with
weigh it first
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a slightly collapsed cake is cosmetic. a puddle in the bottom is not, i could be wrong
is there any reason not to just always use 2ml