if you are testing to settle an argument you will not settle it with n of 1
#test-results 2024-04-07
Sunday19 messages4 participantstimes are UTC
Highlights from this day
- u100_pat — how do you post a result so it is actually useful to somebody in a year post the lot, the purchase month, the lab, the number, and what you were expecting. that makes… 08:28
- mg_per_ml — post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later 09:06
- u100_pat — my sheet has 3 lots from CPC with a spread under a point, which is tight 09:08
- retention_time — my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, we shall see 12:24
how do you post a result so it is actually useful to somebody in a year
post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
when did you buy it
while im here anyone tested the same lot twice at different labs
do the results in this channel skew because people test when suspicious
[edited]post the lot, the purchase month, the lab, the number, and what you were expecting. that makes it useful later
thats not great
⚠️18
my sheet has 3 lots from CPC with a spread under a point, which is tight
one data point
| Evidence | Counts? |
|---|---|
| Independent report, lot you bought, lot number legible | yes |
| Independent report, no lot number | no |
| Supplier certificate only | no |
| Screenshot of a report | no |
| Blinded pooled submission | yes, for the pool |
| A friend who said it was fine | no |
weigh the vial before you reconstitute. it costs nothing and catches the common failure
i test roughly every tenth vial. it is a sampling strategy, not paranoia
whats the underfill rate people are actually seeing
thats within range
has a supplier ever disputed a result posted here
the honest limits: hobby chain of custody is weak and any result here should be read with that in mind
attach the pdf
selection bias
✅18⚠️8🧊9
thats a fill problem
my read after three years of this: purity is mostly fine across the market and fill consistency is where suppliers differ, we shall see