Tags · Practice

concentration maths

mg per mL, and the conversion to syringe graduations.

41 topics 11 solved Synonyms: mg-per-ml Group: Practice

41 topics · page 1 of 2

Topic	Participants	Replies	Views	Activity
Reconstituting a multi-strength kit without mixing yourself up — what changed since Practice › Reconstitution concentration maths syringe units bacteriostatic water On the subject in the title: Reconstituting a multi-strength kit without mixing yourself up — what changed since Working notes rather than a conclusion. What changes if the standard account of Reconstituting…	+42	46	1k	7h
About the Reconstitution category Practice › Reconstitution reconstitution concentration maths syringe units Pinned Wiki Diluent choice, volumes, resulting concentrations, worked examples, and the errors we see most often. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is…	+1	5	15k	16h
A 10 mg vial reconstituted three different ways, compared Practice › Reconstitution bacteriostatic water worked example concentration maths Posting this under the heading it deserves: A 10 mg vial reconstituted three different ways, compared Everything below is what sits behind that. Something about 10 mg vial reconstituted three does not…	+30	34	55k	17h
A calculator that gives a right answer to the wrong question Data & Tools › Calculators concentration maths worked example site feedback syringe units Posting this under the heading it deserves: A calculator that gives a right answer to the wrong question Everything below is what sits behind that. Posting the calculation with the inputs, so that somebody…	+32	36	1.9k	17h
How much of the diluent volume the powder itself displaces Practice › Reconstitution 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 Writing this out with the numbers in it, because "roughly" is how these go wrong. Vial:…		2	1.8k	1d
Why I now write the concentration on the vial in marker Practice › Reconstitution syringe units bacteriostatic water concentration maths Asking directly, because I could not find a straight answer: Why I now write the concentration on the vial in marker Writing this out with the numbers in it, because "roughly" is how these go wrong. Vial: 15…	+1	5	30k	11d
Second pass at: The storage lookup and where its data comes from Data & Tools › Calculators concentration maths syringe units site feedback worked example On the subject in the title: Second pass at: The storage lookup and where its data comes from Working notes rather than a conclusion. Two things I would like separated before anyone answers on storage lookup,…	+38	42	13k	19d
Coming back to: Swirling versus inverting versus leaving it alone Practice › Reconstitution reconstitution concentration maths syringe units Solved Swirling versus inverting versus leaving it alone Writing it up because I had to work it out twice and would rather nobody else did. Swirling versus inverting versus leaving — I have the observation and I do…	+20	24	16k	26d
[2026 update] A vial that will not fully dissolve: what to check and in what order Practice › Reconstitution 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
Choosing a concentration on purpose rather than by accident Practice › Reconstitution concentration maths worked example syringe units Solved On the subject in the title: Choosing a concentration on purpose rather than by accident Working notes rather than a conclusion. Working notes on choosing a concentration rather than a conclusion. I would…		2	719	1mo
Why the titration planner refuses to produce a schedule below a floor Data & Tools › Calculators syringe units site feedback concentration maths Solved Asking directly, because I could not find a straight answer: Why the titration planner refuses to produce a schedule below a floor Titration planner refuses — I have the observation and I do not trust my…	+76	83	53k	2mo
Validating a calculator against hand arithmetic Data & Tools › Calculators syringe units concentration maths worked example Solved Validating a calculator against hand arithmetic Writing it up because I had to work it out twice and would rather nobody else did. Validating a calculator against hand: setting out the arithmetic in full,…	+17	21	12k	3mo
Foaming during reconstitution and whether it matters — the long version Practice › Reconstitution 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. A narrow question about Foaming during reconstitution,…	+100	117	6k	3mo
Converting between mg/mL and units per dose, both directions — the long version Practice › Reconstitution 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
Bug report: the reconstitution calculator and a rounding edge case Data & Tools › Calculators worked example site feedback syringe units concentration maths Bug report: the reconstitution calculator and a rounding edge case — setting out what I have, and where I think it stops being reliable. Posting the calculation with the inputs, so that somebody can disagree…	+68	72	28k	4mo
Second pass at: Choosing a concentration on purpose rather than by accident Practice › Reconstitution reconstitution syringe units concentration maths 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. Posting a small dataset on Choosing a…	+49	54	6k	4mo
Follow-up: Bug report: the reconstitution calculator and a rounding edge case Data & Tools › Calculators concentration maths site feedback syringe units On the subject in the title: Bug report: the reconstitution calculator and a rounding edge case Working notes rather than a conclusion. Posting the calculation with the inputs, so that somebody can disagree…	+58	63	24k	5mo
About the Calculators category Data & Tools › Calculators worked example concentration maths syringe units Pinned Wiki Reconstitution, dose equivalence, titration planning, mass-error checking and storage lookup. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded with…	+2	7	733	5mo
Coming back to: Reconstitution volumes that produce round numbers, tabulated Practice › Reconstitution 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. Writing this out with the numbers in it, because "roughly" is how these go…		2	24k	6mo
Why "add 2 mL" is not an instruction Practice › Reconstitution 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. Practical question with the units stated, because I have seen how quickly…	+23	27	3.5k	6mo
Follow-up: The decimal-point error, and the habit that catches it Practice › Reconstitution 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. A follow-up question about decimal-point error that I did not know to ask the first…	+118	131	50k	7mo
Coming back to: Over-dilution: when your dose falls below one readable graduation Practice › Reconstitution 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
The decimal-point error, and the habit that catches it Practice › Reconstitution syringe units concentration maths worked example bacteriostatic water The decimal-point error, and the habit that catches it Writing it up because I had to work it out twice and would rather nobody else did. An honest uncertainty about decimal-point error rather than a…	+110	121	10k	7mo
Coming back to: Feature request: should a dose-equivalence tool exist at all? Data & Tools › Calculators syringe units concentration maths worked example site feedback Solved Feature request: should a dose-equivalence tool exist at all? I have a specific reason for asking rather than idle curiosity, and the context is below. Reading back through what has been written here about…	+37	41	725	7mo
Second pass at: The mass-error checker and its intended scope Data & Tools › Calculators site feedback worked example concentration maths Solved Pinned Posting this under the heading it deserves: Second pass at: The mass-error checker and its intended scope Everything below is what sits behind that. Posting a small dataset on mass-error checker. It is mine,…	+70	74	1.7k	8mo
A calculator that gives a right answer to the wrong question — does this still hold? Data & Tools › Calculators worked example concentration maths syringe units site feedback Solved Under review A calculator that gives a right answer to the wrong question — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Posting the calculation with the…	+23	27	62k	8mo
A 10 mg vial reconstituted three different ways, compared — the long version Practice › Reconstitution reconstitution syringe units worked example concentration maths A 10 mg vial reconstituted three different ways, compared — the long version — setting out what I have, and where I think it stops being reliable. Asking about 10 mg vial reconstituted three directly, because…	+146	158	47k	9mo
Coming back to: Checking someone else's arithmetic: a worked example thread Practice › Reconstitution 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
Reconstituting a multi-strength kit without mixing yourself up Practice › Reconstitution reconstitution concentration maths syringe units Wiki Reconstituting a multi-strength kit without mixing yourself up Writing it up because I had to work it out twice and would rather nobody else did. I have spent a fortnight trying to pin reconstituting a…	+108	123	30k	11mo
Foaming during reconstitution and whether it matters Practice › Reconstitution 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. A follow-up question about foaming during reconstitution that I did…	+19	24	466	11mo

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