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c/reconstitution·submitted 1 year ago by u/aleksi_lehtinen

[Discussion] can we stop arguing about bacteriostatic water until somebody posts a number

Discussionbranch of 7 comments

Slightly embarrassed to be asking this, but: can we stop arguing about bacteriostatic water until somebody posts a number. Spent 2 weeks confused about this until somebody drew the table for me. 30mg, 3mL, 10mg/mL, 1mg is 10 units. That is the whole thing. If your calculation produces a fraction of a unit, the…

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7 comments, started 1 year ago
u/units_not_mgMOD338 points·1 year ago

Working has to be shown on arithmetic posts. Added a note asking for it rather than removing this one.

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u/janek_ferrari489 points·1 year ago

dead space in the needle hub is real and it is small

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u/ines_ekstrom718 points·1 year ago

aim the stream at the glass wall, not at the cake

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u/honest_syringe_maybe350 points·1 year ago

aim the stream at the glass wall, not at the cake

This is the sentence that makes the rest unnecessary. Write it on the vial and the problem is gone.

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u/nadia_kjaer431 points·1 year ago

Did the maths give you a whole number of units, or a fraction?

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u/viktor_kirchner199 points·1 year ago

5mg into 2mL is 2.5mg/mL, and 2.5mg of that is 100 units

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u/hub_opssite staff397 points·1 year ago

if the maths gives you a fraction of a unit, change the concentration

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