The question in the title: Why the titration planner refuses to produce a schedule below a floor I will give what I have already checked below so nobody repeats it.
A follow-up question about titration planner refuses that I did not know to ask the first time.
The earlier thread answered what I asked. What I should have asked is below, and I think it is the one that matters.
The arithmetic in the opening post is right; the assumption feeding it is the part to check.
Adding a reference point for titration planner refuses. Mine is a single case, collected without controls, and I am posting the method alongside it so it can be discounted appropriately.
Where I part company with the opening post, and it is a narrow parting.
Unit-conversion tools are only as good as the assumption they make about the syringe. Ask what barrel and what graduation interval it assumed before trusting the units figure.
Flagging that the sources on this are thinner than the confidence in the thread suggests.
Narrowing post #3, because the general version has more than one answer.
The version of titration planner refuses that circulates here is a simplification of a simplification. It is not wrong, but it has lost the conditions under which it holds, and those conditions are where the interesting cases live.
Dose equivalence calculator: compounds have different potencies. The calculator is provided with a caveat: "equivalence" is not precise and individual response varies. It is a rough starting point, not a dose prescription.
I am confident about the direction and much less about the magnitude.
The most common input error is entering the vial mass in the concentration field. It produces a plausible number, which is why it survives.
Caveat: everything above assumes the paperwork is what it says it is.
I had read the opposite somewhere and cannot now find where, which tells me something.
If someone has run titration planner refuses properly I would rather read that than my own reconstruction of it. Posting mine only because the thread has gone quiet.
Thank you for the correction. I would rather find out here than later.
Adding a null result on titration planner refuses. I looked, carefully, and found nothing, and null results deserve posting precisely because they never are.
Post #16 is right about the mechanism and I think understates the practical bit.
What I would tell a new member reading about titration planner refuses for the first time: the confident posts are not the reliable ones, and the reliable ones are longer.
Coming back to post #15, because the follow-up matters more than the original answer.
A saved calculation is worth more than a remembered one. Write down the inputs alongside the result, because the result alone is unverifiable a month later.
A partial answer, offered because a partial answer beats none.
Precision and significant figures: the calculators do not round to match your input precision. If you input values to one decimal place, the output might have more. Use significant figures appropriate to your input precision.
Worth reading the earlier posts in this thread before acting on mine.
Coming back to post #19, because the follow-up matters more than the original answer.
On titration planner refuses: the maintained page in the documentation commons covers the general case with citations and a review date, which is more reliable than any reply here including this one.
I would put moderate confidence on the mainstream reading of titration planner refuses and no more. That is not scepticism for its own sake; it is where the sourcing actually stops.
Dose equivalence calculator: compounds have different potencies. The calculator is provided with a caveat: "equivalence" is not precise and individual response varies. It is a rough starting point, not a dose prescription.
Marking that as an opinion rather than a finding.
Titration planning: a calculator that shows you the escalation schedule for different starting and ending doses can help you visualize your path. Actual path might be slower or adjusted for tolerability.
I would put the burden of proof on the interesting explanation, not the dull one.
I had written a reply contradicting post #23 and deleted it. Here is what survived.
Worth separating titration planner refuses as a question about the compound from titration planner refuses as a question about the documentation. They get answered by different people and only one of them is answerable here.
Confirming post #27 from a second method, which matters more than confirming it from a second person.
Where I have landed on titration planner refuses, having got it wrong once in public: the direction is clear, the magnitude is not, and anyone quoting a precise magnitude has borrowed it from somewhere that did not measure it.
Answering the question post #27 raises rather than the one it answers.
Rounding behaviour is where two tools disagree. One rounding to the nearest graduation and one to two decimal places will produce different advice from identical inputs.
The arithmetic in post #27 is right; the assumption feeding it is the part to check.
Marking my uncertainty on titration planner refuses explicitly. I am confident about the direction, much less confident about the size, and not confident at all that it generalises past the case in the first post.