vialroom

#reconstitution 2024-10-12

Saturday20 messages4 participantstimes are UTC
Highlights from this day
  • drawup_dee — lyophilised powder is far more robust than people think. it is the solution that is fragile 19:20
  • drawup_dee — 10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use 19:35
  • drawup_dee — i use bac water even for a single-use vial because it stings less, which is not the reason it exists 19:42
  • drawup_dee — if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space 19:54
U1

sorry to jump in anyone worked out a recon volume that puts 0.25mg on a round unit mark

DD

lyophilised powder is far more robust than people think. it is the solution that is fragile

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dead space

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

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U1

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

BW

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

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

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

DD

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

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

DD

a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with

thats the vacuum

📉14📈8🙏6

if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space

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
BS

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

BS

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

it should be completely clear with no floaters. cloudy means stop