Certificate of Analysis
DSIP 10mg — Batch DSIP-CA-26F-10
This lot of DSIP 10mg (10mg) was independently assayed by Janoshik on 2026-07-13. The figures below are the laboratory’s, published in full rather than summarised. Match the lot code printed on your vial to the code on this page to confirm the vial came from the batch that was tested.
- Compound
- DSIP 10mg
- Lot
- DSIP-CA-26F-10
- Strength
- 10mg
- Purity (HPLC)
- 99.623%
- Expected content
- 10.00 mg
- Measured mass
- 11.85 mg
- Fill accuracy
- 118.5%
- Verification lab
- Janoshik
- Test date
- 2026-07-13
- Format
- Lyophilized powder
Why fill accuracy matters
Purity tells you what fraction of the material in the vial is the target compound. It tells you nothing about how much material is in the vial. A vial can assay at 99.8% purity and hold 7 mg against a 10 mg label — the purity figure is accurate and the vial is still short.
Fill accuracy is the measured mass against the expected content: 11.85 mg measured against 10.00 mg expected, or 118.5%. Both numbers are published for every Eppix batch.
How to read this certificate
Two separate tests sit behind the table above. Identity is established by mass spectrometry: the measured molecular mass is compared against the mass calculated from the compound’s published sequence or formula, and a match within the instrument’s tolerance is what confirms the material is DSIP 10mg rather than something else. Purity is established by reversed-phase HPLC and reported as area percent — the fraction of the total chromatographic signal belonging to the main peak. For this lot that figure is 99.623%.
Area percent is a relative measure, not an absolute one. It says what share of the detected material is the target compound; it says nothing about how much material is in the vial, which is why measured mass is reported alongside it rather than instead of it. A certificate that publishes purity and withholds mass has answered the easier of the two questions.
The working threshold for research-grade peptide material is 98% by HPLC area, with 99% and above the range reputable synthesis routinely reaches. At 99.623%, this lot sits inside that range. Nothing on this page is rounded, restated or re-tested in-house: the certificate is Janoshik’s and carries their test date of 2026-07-13.
New to reading these? How to read a certificate of analysis walks through a full report field by field, and purity vs fill accuracy covers why the two numbers have to be read together.
Full report
Research use only. Materials supplied by Eppix Labs are intended strictly for in-vitro laboratory research. Not for human or veterinary use, and not for the diagnosis, treatment, cure or prevention of any condition.