Peptide Solution Preparation Calculator
Calculate the solvent volume needed to prepare a peptide solution at your target concentration for laboratory research
How to Use This Calculator
- Enter the amount of lyophilized peptide you have in milligrams (check your vial label)
- Enter your target stock concentration in mg/mL
- Click "Calculate" to determine the solvent volume to add
- Add the calculated volume slowly down the vial wall to avoid foaming
- Gently swirl (do not shake vigorously) until fully dissolved
Important Notes
- Always use the appropriate laboratory-grade solvent for your application
- Allow lyophilized peptide to reach room temperature before reconstituting
- Some peptides may require gentle warming or specific pH for solubility
- Store prepared solutions refrigerated (2-8°C) unless otherwise specified
- Check Certificate of Analysis for actual peptide content and purity
Common Concentration Guidelines
Standard Working Concentration
1-2 mg/mL
Suitable for most in vitro applications and cell culture studies
High Concentration Stock
5-10 mg/mL
For preparing dilutions; check solubility limits
Diluted Working Solutions
0.1-1 mg/mL
Diluted from stock for specific experimental protocols
Preparation Tips
🌡️ Temperature
Bring peptide to room temperature before opening to prevent moisture condensation
💧 Adding Solvent
Add liquid slowly down the vial wall, not directly onto the peptide cake
🔄 Mixing
Gently swirl or rotate; avoid vigorous shaking which can denature peptides
❄️ Storage
Store prepared solutions at 2-8°C; some require -20°C for long-term storage
⏱️ Stability
Most peptide solutions stable for 2-4 weeks refrigerated; check specific peptide data
📝 Labeling
Always label with peptide name, concentration, and preparation date
Conversion Reference
| Unit | Equals |
|---|---|
| 1 mg | 1,000 μg (micrograms) |
| 1 mL | 1,000 μL (microliters) |
| 1 g | 1,000 mg |
| 1 mg/mL | 1 μg/μL |
Research Use Only
This calculator is provided for research purposes only to assist in the preparation of peptide solutions for laboratory investigations. All peptides should be handled according to institutional safety protocols and used only in approved research settings. Not intended for human consumption or therapeutic use.