Sterility
Also known as: sterility testing · sterile
Freedom from viable micro-organisms; sterility testing confirms a preparation is not contaminated by bacteria or fungi.
Sterility means the absence of any viable micro-organisms — bacteria, fungi or their spores. For an injectable-format research material it is a fundamental quality attribute.
Sterility testing incubates samples to confirm nothing grows. It complements endotoxin testing (which detects bacterial residue even when no live organisms remain) and is preserved in use by bacteriostatic water and sterile technique.
RELATED TERMS
Endotoxin
Bacterial cell-wall toxins that can contaminate a preparation; low endotoxin levels are a marker of clean manufacturing.
Sterile Technique
The practice of avoiding contamination when reconstituting and drawing from vials — wiping stoppers, single-use needles.
Bacteriostatic Water
Sterile water containing 0.9% benzyl alcohol, the standard solvent for reconstituting peptides so a multi-use vial stays sterile.
Purity
The percentage of a sample that is the intended peptide, as measured by HPLC — the headline quality figure.
Educational content, not medical advice. All products supplied for research purposes only — not for human consumption.