Draw bacteriostatic water into a syringe, then inject slowly down the side of the peptide vial wall — not directly onto the lyophilized powder. Gently swirl the vial until the powder fully dissolves. Never shake. Store refrigerated at 2-8°C and use within 28 days.

0.25 mL equals 25 units on a standard insulin syringe. The conversion is: 1 mL = 100 units, so divide your volume in mL by 0.01 to get units. For best accuracy, use the smallest syringe that fits your dose.

Most reconstituted peptides remain stable for approximately 28 days when stored refrigerated at 2-8°C. Bacteriostatic water containing 0.9% benzyl alcohol acts as a preservative, but degradation accelerates after this window. Discard any solution that becomes cloudy or discolored.

0.3 mL (30 unit) syringes offer the best precision for small doses under 0.3 mL. 0.5 mL (50 unit) syringes work for most peptides. 1 mL (100 unit) syringes are needed when the draw volume exceeds 0.5 mL. Always select the smallest syringe that comfortably fits your dose for maximum accuracy.

First divide vial size by water volume to get concentration. For a 10mg vial reconstituted with 2mL of bacteriostatic water, concentration is 5 mg/mL. For a 250 mcg (0.25 mg) dose, divide 0.25 by 5 to get 0.05 mL. Multiply by 100 to convert to units: 5 units on a 1mL insulin syringe.

No. Always use bacteriostatic water (sterile water containing 0.9% benzyl alcohol), which inhibits bacterial growth and allows multi-dose use over 28 days. Sterile water without preservative is suitable only for single-use reconstitution. Tap, distilled, or filtered water are never acceptable for peptide research applications.