Purity 98.36 % describes what fraction of the eluted material is the target. Content describes what fraction of the cake is peptide at all. Both are on this record and neither substitutes for the other.
gc_headspace
Residual solvents by GC headspace to ICH Q3C(R8).
Section 1
Contribution
Both submits records and annotates other people's.
Records submitted
11
n=11
Annotations
41
n=41
Median purity submitted
98.85%
n=11
Suppliers covered
11
n=11
Section 2
Records submitted
A submitter chose to buy this material and to pay for this assay. That choice is the selection mechanism behind the whole index and it is not random.
| Supplier | Records | Median purity |
|---|---|---|
| Homopeptide | 1 | n<3 |
| FGP | 1 | n<3 |
| JEEP | 1 | n<3 |
| SIG | 1 | n<3 |
| QYB | 1 | n<3 |
| MKM | 1 | n<3 |
| TFS | 1 | n<3 |
| GL Biochem | 1 | n<3 |
| TFC | 1 | n<3 |
| SinoPep | 1 | n<3 |
Section 3
Annotations
Signed technical comments on records. The index does not moderate annotations for agreement with its own arithmetic, and several of these disagree with it. Where a handle has made the same point on several records, one instance is shown and the rest are reachable from the records themselves.
Residual solvents sit in the same slot on the mass balance as counter-ion in a poorly specified certificate. Headspace gas chromatography separates the two and is rarely ordered.
Residual is the slot that absorbs solvent and anything else unaccounted. A large residual with no headspace determination behind it is a placeholder rather than a measurement.
Residual solvent occupies mass in the cake that is neither peptide, water nor counter-ion. On a freshly dried lot it can be a percent, and it is measured on very few records.
Purity 97.87 % describes what fraction of the eluted material is the target. Content describes what fraction of the cake is peptide at all. Both are on this record and neither substitutes for the other.
Residual solvent to the ICH limits is a stated requirement in regulated manufacture and an optional extra here. It is the slot most likely to hide something.
Purity 98.70 % describes what fraction of the eluted material is the target. Content describes what fraction of the cake is peptide at all. Both are on this record and neither substitutes for the other.
Following. Will comment if a second record turns up.
Purity 99.58 % describes what fraction of the eluted material is the target. Content describes what fraction of the cake is peptide at all. Both are on this record and neither substitutes for the other.
Closure is a property of the index's arithmetic, not evidence about the material. What it establishes is that the four numbers on this record are mutually consistent.
Nothing outstanding on this record. Balance closed, recovery computed, purity and identity both determined.
Purity 98.65 % describes what fraction of the eluted material is the target. Content describes what fraction of the cake is peptide at all. Both are on this record and neither substitutes for the other.
Showing 12 distinct comments of 41 annotations by this handle.