Can you describe a project where you had to optimize a formulation to enhance product stability?
Technical
Formulation Optimization
Stability Testing
Problem-solving
This question is vital for evaluating your technical knowledge and practical skills in formulation chemistry, particularly in stability studies and optimization techniques.
How to answer
- Begin with a brief overview of the product and the formulation challenge
- Detail the specific methods you used to assess stability (e.g., accelerated aging tests, pH stability)
- Explain the changes you implemented to the formulation and the rationale behind them
- Discuss any collaboration with cross-functional teams (e.g., quality assurance, production)
- Quantify the results achieved in terms of stability improvements or product performance
What not to say
- Providing vague details without a clear outline of your role
- Focusing solely on theoretical knowledge without practical application
- Neglecting to mention any teamwork or collaboration
- Failing to discuss the outcome or impact of your optimization
Sample answer
“At my internship with GlaxoSmithKline, I worked on optimizing a cream formulation that exhibited phase separation. I conducted stability tests under various conditions and identified that reducing the emulsifier concentration improved stability. After reformulating, we saw a 25% increase in shelf life, which was a significant win for our team.”