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Reconstitution Solvents: A Comparison

While our team stands firmly behind bacteriostatic water for most applications, it's important for researchers to understand the options. The diluent you choose has a direct impact on the stability and sterility of your final solution. Here's a breakdown of th

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  • While our team stands firmly behind bacteriostatic water for most applications, it's important for researchers to understand the options. The diluent you choose has a direct impact on the stability and sterility of your final solution. Here's a breakdown of the common choices.
  • Bacteriostatic Water
  • Standard for most peptides like CJC-1295
  • ~28 days
  • Contains 0.9% benzyl alcohol to prevent bacterial growth.
  • The Gold Standard. Ensures sterility for multi-use vials, making it ideal for research protocols.
  • Sterile Water
  • Single-use applications, immediate use
  • < 24 hours
  • Pure H2O, no preservatives. Suitable if the entire vial will be used at once.
  • Risky for multi-use vials due to the high potential for contamination after the first puncture.
  • Acetic Acid (0.6%)
  • For specific, less soluble peptides (e.g., some IGFs)
  • Varies
  • Can improve solubility for notoriously difficult-to-dissolve peptide sequences.
  • Not recommended for CJC-1295. It's unnecessary and can alter the solution's pH, potentially affecting stability.
  • For CJC-1295 and the vast majority of peptides you'll find in our full peptide collection, bacteriostatic water is the unequivocal best choice. It provides the perfect balance of solvency and long-term sterility for a typical research timeline.
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