[Lab] GGPeps warehouse vial vs direct vial, same nominal batch, same day — 97.4 vs 98.6
This is the experiment I have wanted to run for about a year and nobody had bothered. Stock Batch Service Claimed Result EU warehouse GY-2604W Janoshik 98.0% 97.4% Factory direct GY-2604D Janoshik 98.0% 98.6% Same vendor, same nominal batch number, same compound, sent together, same service, same day. 1.2 points…
This has been an open question on the source page since 2024 and nobody has closed it. I will run a pair next month on a different compound.
The thing that makes it hard to interpret: "same nominal batch" is doing a lot of work. If warehouse stock is repacked, the batch number can survive a process that the material did not.
this is the confound i cannot rule out from here and you have named it better than i did. the batch number is a label, not a chain of custody.
which is why i keep saying the batch number tells you what document to look for, not what is in the vial. it is an index key, not a guarantee.
so the practical advice is "ask which stock you are getting"?
yes, and it is on the source page as a standing note. warehouse is faster, direct has tested marginally better twice, and two is not a finding.
and for a lot of people two days from a domestic warehouse beats 1.2 purity points, which is a completely defensible trade as long as you know you are making it.