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Intersection · Practice × dead volume

Practice topics tagged dead volume

Topics in Practice carrying the tag dead volume. Residual liquid in hub and needle, and the dose it silently removes.

16 topics

Topic	Participants	Replies	Views	Activity
Coming back to: Why I now write the concentration on the vial in marker reconstitution syringe units bacteriostatic water worked example The question in the title: Why I now write the concentration on the vial in marker I will give what I have already checked below so nobody repeats it. Practical question with the units stated, because I have…	+8	12	4.3k	1d
How much of the diluent volume the powder itself displaces concentration maths bacteriostatic water dead volume worked example Asking directly, because I could not find a straight answer: How much of the diluent volume the powder itself displaces Practical question with the units stated, because I have seen how quickly these go wrong…		2	1.8k	1d
[2026 update] A vial that will not fully dissolve: what to check and in what order concentration maths dead volume bacteriostatic water syringe units Solved Posting this under the heading it deserves: A vial that will not fully dissolve: what to check and in what order Everything below is what sits behind that. Practical question with the units stated, because I…	+114	128	20k	1mo
Foaming during reconstitution and whether it matters — the long version reconstitution bacteriostatic water worked example concentration maths Foaming during reconstitution and whether it matters — the long version — setting out what I have, and where I think it stops being reliable. Reporting something rather than asking about it, in case the…	+100	117	6k	3mo
Converting between mg/mL and units per dose, both directions — the long version reconstitution worked example syringe units dead volume Converting between mg/mL and units per dose, both directions — the long version Writing it up because I had to work it out twice and would rather nobody else did. Practical question with the units stated,…	+110	132	1.7k	3mo
Coming back to: Reconstitution volumes that produce round numbers, tabulated concentration maths syringe units bacteriostatic water dead volume On the subject in the title: Reconstitution volumes that produce round numbers, tabulated Working notes rather than a conclusion. Practical question with the units stated, because I have seen how quickly…		2	24k	6mo
Why "add 2 mL" is not an instruction reconstitution worked example syringe units dead volume The question in the title: Why "add 2 mL" is not an instruction I will give what I have already checked below so nobody repeats it. A question about technique rather than about dose. I have been doing the…	+23	27	3.5k	6mo
Follow-up: The decimal-point error, and the habit that catches it concentration maths bacteriostatic water dead volume reconstitution Closed On the subject in the title: The decimal-point error, and the habit that catches it Working notes rather than a conclusion. I have read the maintained page on this and I still have a gap, so I am asking…	+118	131	50k	7mo
Coming back to: Over-dilution: when your dose falls below one readable graduation worked example dead volume syringe units bacteriostatic water Over-dilution: when your dose falls below one readable graduation Writing it up because I had to work it out twice and would rather nobody else did. I have read the maintained page on this and I still have a…	+90	97	1.1k	7mo
Coming back to: Checking someone else's arithmetic: a worked example thread concentration maths reconstitution bacteriostatic water dead volume Posting this under the heading it deserves: Checking someone else's arithmetic: a worked example thread Everything below is what sits behind that. Practical question with the units stated, because I have seen…	+13	17	293	11mo
Foaming during reconstitution and whether it matters concentration maths bacteriostatic water reconstitution syringe units Posting this under the heading it deserves: Foaming during reconstitution and whether it matters Everything below is what sits behind that. I have read the maintained page on this and I still have a gap, so I…	+19	24	466	11mo
Why "add 2 mL" is not an instruction — a second dataset concentration maths bacteriostatic water worked example dead volume Why "add 2 mL" is not an instruction — a second dataset — that is the question, and I have not found it answered plainly anywhere I have looked. Reporting something rather than asking about it, in case the…		2	13k	11mo
A 5 mg vial and a 0.25 mg dose: the arithmetic in full — what changed since dead volume bacteriostatic water reconstitution syringe units Closed Posting this under the heading it deserves: A 5 mg vial and a 0.25 mg dose: the arithmetic in full — what changed since Everything below is what sits behind that. I have read the maintained page on this and I…	+86	93	25k	13mo
Over-dilution: when your dose falls below one readable graduation concentration maths syringe units bacteriostatic water dead volume On the subject in the title: Over-dilution: when your dose falls below one readable graduation Working notes rather than a conclusion. I have read the maintained page on this and I still have a gap, so I am…	+15	19	248	15mo
Converting between mg/mL and units per dose, both directions concentration maths dead volume bacteriostatic water Solved Posting this under the heading it deserves: Converting between mg/mL and units per dose, both directions Everything below is what sits behind that. Practical question with the units stated, because I have…	+106	142	9.5k	19mo
Second pass at: Choosing a concentration on purpose rather than by accident worked example dead volume reconstitution Second pass at: Choosing a concentration on purpose rather than by accident Writing it up because I had to work it out twice and would rather nobody else did. Practical question with the units stated, because…	+44	48	1k	19mo

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