CarlaRPh_TPA said:Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent…
Adding a me-too, because a thread of one person's experience is not much use. Posting only so the count is not one.
CarlaRPh_TPA said:Almost every unanswerable question in these threads is unanswerable because three things changed in the same fortnight, and no amount of subsequent…
Coming at CarlaRPh_TPA’s question from a different direction. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.
The figures, for anyone assembling their own picture. One practical note: write down what you did and when, before you need it. Reconstructing a timeline from memory three months later is how people end up unable to answer the one question that would have resolved it.
Sigma-Aldrich — Research-Grade Standards
Certified reference materials, analytical reagents, and research-grade standards for peptide verification. Trusted by laboratories worldwide.
Shop Reference StandardsA narrower follow-up, since the general answer is now clear:
How long did you give it before you decided it was working?
josh_phd_bmore said:One practical note: write down what you did and when, before you need it.
I do not accept the framing. The question has been narrowed to the version that has a tidy answer, and the part that was dropped is the part the OP actually asked about.