Quality and testing
Quality and testing — page 2
Older conversations from this circle.
Why two labs can report different numbers on the same sample
Dara15 replies
Why two labs can report different numbers on the same sample — putting it in its own thread so it does not get lost in the check-in. Putting this here because I do not want to be sold…
BCH and the peak table — why I stopped looking at the headline figure
Dev5 replies
BCH send a peak table rather than a single percentage, and working through one properly has changed how I read every other document I have. A headline figure is a summary of the table. The…
What Janoshik reports and what it does not claim
Yannick20 replies
Starting a thread on this because it keeps coming up in ones and twos: What Janoshik reports and what it does not claim I have read the paper and I am not sure I have understood it. I have…
WXT documentation in laboratory format, read line by line
Gil5 replies
A WXT certificate is laid out the way a laboratory would expect, and I want to read one line by line here because the format is unfamiliar if you have only seen consumer-facing documents.…
Reading a KP certificate: what is on it and what is not
Tam5 repliesfacilitator note
I have three KP certificates in front of me and I want to go through what is actually on them, because I spent a year looking at documents like this and taking the big number on trust. Top…
CPC certificates carry the gradient. Here is why that matters
Nils5 replies
A CPC certificate gives you the gradient and the column chemistry, and I want to explain why that is worth more than another decimal place on the purity figure. Without the method, a…
Water content and why it changes the arithmetic
Hetty21 replies
A question rather than an update: Water content and why it changes the arithmetic I have read the paper and I am not sure I have understood it. My question is about what a particular…
WWB and the long series: what years of results actually tell you
Ruthie5 replies
I have been reading the independent results for WWB as a series rather than one at a time, and I think the series is the interesting object. A single good result tells you about one vial.…
What a reference standard is for
Zeb16 replies
Something I have been sitting with: What a reference standard is for Not looking for advice so much as other people's experience. I have read the paper and I am not sure I have understood…
Sample handling ruins more results than anything else
Tor24 replies
Sample handling ruins more results than anything else — putting it in its own thread so it does not get lost in the check-in. I have read the paper and I am not sure I have understood it.…