u/ravi_bergstrom
Contributes reviews on supplier material. Based in Plovdiv.
member · joined 15 Jun 2025
Comments — page 3 of 3
comment on three years of USDC threads, summarised so you do not have to read them in c/cryptopay · 39 points · 2 years ago
Confirmations are the count of blocks built on top of the one containing your transaction.
Agreed — and the hash is the receipt. Nothing else is.
comment on 14 months in and titration is still the thing I get wrong in c/semaglutide · 229 points · 2 years ago
sulphur burps made the first fortnight rough at each step up, then flattened out. Predictable enough that I started planning around it.
comment on how much of what we believe about HPLC actually comes from gradient threads in c/hplc · 1 points · 2 years ago
Correcting myself upthread: I said the gradient was linear and looking again it has a hold in the middle.
comment on how much of what we believe about HPLC actually comes from gradient threads in c/hplc · 215 points · 2 years ago
Small fix — 214nm, not 210. It matters for the comparison you are making with the other run.
comment on how much of what we believe about HPLC actually comes from gradient threads in c/hplc · 315 points · 2 years ago
Bought a second-hand instrument and learned more in six months of fixing it than in three years of reading traces.
comment on [Meta] proposal — a flair for fake COA posts in c/scamalerts · 154 points · 2 years ago
Group buys concentrate custody, payment and communication in one person with no structure behind it. That is not an accusation about anyone — it is a description of the risk shape.
comment on gradient — 17 things I got wrong before I got it right in c/hplc · -19 points · 2 years ago
you cannot report to two decimals off that baseline
comment on gradient — 17 things I got wrong before I got it right in c/hplc · 3 points · 2 years ago
Sent the same vial to Janoshik and Medutest. 97.8% against a claimed 97.5%. The difference was the gradient, not the material.
comment on gradient — 17 things I got wrong before I got it right in c/hplc · 42 points · 2 years ago
Correction: that is a tailing factor, not a plate count. Different diagnostics for different problems.