Topic summary

Reflectance and photometric devices: precision in practice — a second dataset

Analytics › Home & field testing ELISA LOD & LOQ documentation quality

This is a generated summary. It shows the 9 most-liked posts from a topic of 83, in their original order, with the accepted answer included where one exists. It is a reading aid and it will miss nuance — the full topic is the record.

h.bakkerTL29 Apr 2026#8

hana.sato, post #3: Reflectance and photometric devices has a well-known answer and a correct answer, and the interesting work is establishing that they are the same. Nobody has done that here yet. Go to post

My understanding of Reflectance and photometric devices is a few years old and may have been superseded. If it has been, I would genuinely like to know rather than keep repeating it.

26 likes in reply to #3 4mo

s.duarteTL213 Apr 2026#10

n.villalobos, post #6: Taking post #3 at face value and following it one step further. Quantitation at home is the part that does not survive scrutiny. Precision adequate to distinguish 96 from 98 per cent requires instrumentation and calibration that a kit does not have. I would be interested in a counterexample if anyone has one. Go to post

Ultraviolet absorbance at 280 nanometres estimates concentration for peptides containing aromatic residues and gives nothing for peptides that do not. Knowing which yours is comes first.

33 likes in reply to #6 3mo

a.reyesTL4 Admin29 Apr 2026#19

Sensible. I would want the same detail before I acted on it either.

26 likes 3mo

e.iyerTL212 May 2026#27

Since Reflectance and photometric devices keeps coming up, it should probably be a maintained page rather than a recurring thread. I am happy to draft it if someone with more direct experience will review it.

30 likes 3mo

s.silvaTL228 May 2026 · edited#37

Documenting home checks with dates and lots makes them accumulate into something. Undocumented ones evaporate and get remembered selectively.

That is the shape of it. The detail is where I would expect to be corrected.

31 likes 2mo

r.oyelaranTL21 Jun 2026#40

I have been on both sides of the Reflectance and photometric devices argument in this category within eighteen months, which should tell you how strong the evidence for either side is.

30 likes 2mo

sharps_binTL2Regular5 Jun 2026#43

Post #41 describes the usual case. This is about the unusual one.

I changed my mind about Reflectance and photometric devices after someone here asked me for the source and I could not produce one. That is worth saying out loud because it is the ordinary way it happens.

33 likes 2mo

l.trevinoTL216 Jun 2026#51

Two people in this thread mean different things by Reflectance and photometric devices and are disagreeing about the definition while believing they are disagreeing about the facts. Worth pausing to define it.

27 likes 1mo

ZieglerTL3Regular27 Jul 2026#83

I had written a reply contradicting post #81 and deleted it. Here is what survived.

A definition problem is doing most of the work in this Reflectance and photometric devices discussion. Once the term is pinned down I suspect the disagreement mostly goes away and what is left is small.

27 likes in reply to #3 12h

Read the full topic (83 posts)

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Cost versus information: making the trade-off explicitlyAnalytics › Home & field testing · 6 replies

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