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My kit came with everything packaged and sterile

The benzyl alcohol preservative has been extensively tested for compatibility with peptide structures at the 0.9% concentration and does not cause degradation or denaturation of properly stored reconstituted peptide solutions

The inclusion of benzyl alcohol provides a self-preserving formulation that inhibits microbial growth following initial puncture of the vial, permitting multiple withdrawals over a defined period of time a characteristic that distinguishes it from single-use sterile water for injection products typically encountered in laboratory supply catalogs

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