Lyophilization: Why Research Peptides Ship as Freeze-Dried Powder
Freeze-drying removes water by sublimation at low temperature, leaving a porous solid that resists the chemical reactions that degrade peptides in solution.
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Endotoxin Testing in Peptide Quality Control
Endotoxin is the contaminant that survives sterilization. How LAL and recombinant assays detect it, and what an endotoxin result on a COA means.
Bacteriostatic Water: What It Is and Why Labs Use It
Bacteriostatic water is sterile water with 0.9% benzyl alcohol. What that preservative does, what it does not do, and how it differs from plain sterile water.
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