vialroom

#reconstitution 2026-06-06

Saturday17 messages6 participantstimes are UTC
Highlights from this day
  • week_three_wall — update on the earlier thing does benzyl alcohol matter if im finishing the vial in one go 20:44
  • mg_per_ml — 5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose 21:05
  • VialBot — Testing queue: 4 submissions open, 49 awaiting dispatch. 21:27
  • void_volume — bacteriostatic water for anything multi-use. sterile water has no preservative in it at all 21:33
NW

dead space in a standard insulin syringe hub is small but it is not nothing over a month

WT

update on the earlier thing does benzyl alcohol matter if im finishing the vial in one go

🧊13📈1
MP

too dilute imo

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
MP

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

🤝4

5mg in 2ml gives 2.5mg/ml, 0.25mg is 10 units. good for a starting dose

⚠️1🔥16
VV

if i add 1ml to a 30mg vial what concentration am i actually at

slightly off topic but anyone got a photo of what a properly dissolved vial looks like

i keep a spare vial of bac water in the fridge purely so i never rush the maths

follow up im getting bubbles in the barrel every single time, what am i doing wrong

VB

Testing queue: 4 submissions open, 49 awaiting dispatch.

VV

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

🧊9

weigh it first

OV

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

NW

coming back after 17 months, has the pinned recon volume advice changed

yep 10 units