#reconstitution 2026-01-07

Wednesday19 messages5 participantstimes are UTC

Highlights from this day

blank_run — if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space 16:15
VialBot — On this day 2 years ago this channel logged 39 messages. 16:17
otto_swirls — how do you all measure a half unit, or do you just not 17:40
protein_floor — i was wrong about this last year: it is fine to draw cold, it just stings more going in, n of 1 obviously 18:02
blank_run — update on the earlier thing 20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy, i have it written down somewhere 19:14

genuine question if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration

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

round numbers

🤝7💀8

thats the vacuum

you can absolutely just always use 2ml, and honestly most of us should

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

📈5

one unit is 0.01ml. 100 units is 1ml. everything else in this channel follows from that, happy to be corrected

On this day 2 years ago this channel logged 39 messages.

one unit is 0.01ml

how do you all measure a half unit, or do you just not

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/ml

swirl dont shake

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/ml

if the maths gives you 13.7 units, change the volume. do not try to hit 13.7

i was wrong about this last year: it is fine to draw cold, it just stings more going in, n of 1 obviously

🧊12

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

bac water

🤝6⚠️5

do you draw up with the same pin you inject with

📈1

read it at eye level

update on the earlier thing 20mg in 2ml is 10mg/ml. 1mg is 10 units, 2mg is 20 units, easy, i have it written down somewhere

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