i told ERP about a result they would not have liked and they did not argue. credit where it is due
#test-results 2026-05-11
Monday15 messages5 participantstimes are UTC
Highlights from this day
- belfast_bac — how much does sample handling on my end affect the number 20:00
- karl_fischer — 96.8 against a certificate of 98.1 is fine. the same supplier landing low four times in a row is a question 20:24
- ferrous_ash — quantity testing is usually a separate line item and it is the one worth paying for 20:55
log the boring ones
✅1👍4😂3
how much does sample handling on my end affect the number
👀9📈18
test it again
one data point
thats within range
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
sample handling on your end absolutely affects it. draw cleanly, ship fast, do not let it sit warm, happy to be corrected
96.8 against a certificate of 98.1 is fine. the same supplier landing low four times in a row is a question
lot bought purity assay/label
A-2418 2025-03 99.1% 9.6 / 10mg
A-2601 2025-08 98.7% 9.8 / 10mg
B-0114 2026-01 99.3% 9.4 / 10mg
B-0329 2026-04 98.9% 9.9 / 10mgi have never regretted spending the money on a test. i have regretted not testing twice
the widest spread in my data is about 2.6 percentage points across five lots from one supplier
🔥1😂4
my result contradicts the supplier certificate, do i tell them
quantity testing is usually a separate line item and it is the one worth paying for
📉16
if you are testing to settle an argument you will not settle it with n of 1
coa-d-0718.pdf
1 page · 904 KB · not retained in the public archive
update from 15 months ago: retested the same supplier, result came back better, logged both, we shall see
🧊12