A summary sheet with a single purity figure is not a certificate. The minimum useful analytical package, and how to tell a real report from a template.
A summary sheet with a single purity figure is not a certificate. The minimum useful analytical package, and how to tell a real report from a template.
Residual moisture affects both stated mass and long-term stability. How the measurement is made and what a normal range looks like.
Freeze-dried powder is stable at ambient temperature for days. The cold pack in your carton is a margin against transit delays, not a requirement.
Eleven lots released this month. One failed on residual solvent and was returned to the supplier. The full panel for each is now published.
A lot can be 98% pure by HPLC and still contain substantially less peptide by mass. Water, counterion and residual solvent all sit in the gap.