update from 23 months ago: switched to a single concentration and have not miscalculated since
[edited]#reconstitution 2025-07-12
Saturday19 messages4 participantstimes are UTC
Highlights from this day
- truncation_tru — i have never once regretted using a rounder number and a slightly bigger volume, your mileage will differ 16:56
- stack_sceptic — i use bac water even for a single-use vial because it stings less, which is not the reason it exists 17:13
- truncation_tru — if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space, ask me again in a month 10mg in 1ml is 10mg/ml, so 2.5mg is 25 units.… 17:15
- eight_mm — lyophilised powder is far more robust than people think. it is the solution that is fragile, take that with a pinch of salt 18:26
nobody here should be telling you a dose. we can check your arithmetic, thats a different thing
my vial pulled the water in on its own, is that the vacuum or did i do something
too dilute imo
read it at eye level
i have never once regretted using a rounder number and a slightly bigger volume, your mileage will differ
😂3🔥1
label the vial
🙏5❤️6
i use bac water even for a single-use vial because it stings less, which is not the reason it exists
📉16🙏5
how much do i lose to dead space with a 30G pin
if you draw up with a bigger pin and inject with a fresh one you lose a bit more to dead space, ask me again in a month
10mg in 1ml is 10mg/ml, so 2.5mg is 25 units. thats the one i use
is the meniscus reading actually a real source of error or am i overthinking
the jewellery scale is a good habit but calibrate it, they drift badly
[edited]took me a year to stop over-diluting. the measurement error at 4 units is worse than the convenience
gross powder mass is not net peptide. water and counterion are in that number
[edited]is a slightly cloudy solution ever ok or is that always a bin it
pick the volume so your dose is a whole number of units. thats the entire trick
thats 5mg/ml
lyophilised powder is far more robust than people think. it is the solution that is fragile, take that with a pinch of salt
*Janoshik not the other one