Chromatography
Chromatography is a fundamental laboratory method used to separate and analyze different components in mixtures. Think of it like sorting colored markers - just as different colors can be separated when they run across paper, scientists use chromatography to separate different chemicals. This technique is widely used in industries like pharmaceuticals, food and beverage, environmental testing, and chemical manufacturing. When you see this on a resume, it usually means the candidate has experience in chemical analysis and quality control. Similar techniques include spectroscopy and mass spectrometry, but chromatography remains one of the most common and versatile methods in the industry.
Examples in Resumes
Performed quality control testing using Chromatography techniques in pharmaceutical manufacturing
Developed new Chromatographic methods for analyzing food additives
Supervised HPLC and Gas Chromatography laboratory operations
Led method development using Chromatography for environmental sample analysis
Typical job title: "Analytical Chemists"
Also try searching for:
Where to Find Analytical Chemists
Professional Organizations
Job Boards
Professional Networks
Example Interview Questions
Senior Level Questions
Q: How would you approach method development for a new product analysis?
Expected Answer: A senior analyst should describe a systematic approach: starting with sample preparation, selecting appropriate chromatography type, optimizing conditions, and validating the method. They should mention considering factors like time, cost, and regulatory requirements.
Q: How do you handle method transfer between different laboratories?
Expected Answer: Should discuss standardization procedures, documentation requirements, training needs, and how to ensure consistent results across different locations and equipment.
Mid Level Questions
Q: What steps do you take when troubleshooting poor separation results?
Expected Answer: Should explain basic troubleshooting steps like checking mobile phase composition, column condition, instrument calibration, and sample preparation methods.
Q: How do you ensure the quality of your analytical results?
Expected Answer: Should discuss calibration procedures, quality controls, standard operating procedures, and documentation practices.
Junior Level Questions
Q: What are the basic components of a chromatography system?
Expected Answer: Should be able to describe the basic parts: column, detector, mobile phase, and sample injection system in simple terms.
Q: How do you prepare samples for analysis?
Expected Answer: Should explain basic sample preparation steps like filtering, dilution, and proper storage conditions.
Experience Level Indicators
Junior (0-2 years)
- Basic operation of chromatography instruments
- Sample preparation
- Following standard operating procedures
- Data recording and basic analysis
Mid (2-5 years)
- Method optimization
- Troubleshooting instrument problems
- Data analysis and interpretation
- Quality control procedures
Senior (5+ years)
- Method development
- Lab team supervision
- Regulatory compliance
- Training and mentoring
Red Flags to Watch For
- No hands-on experience with chromatography instruments
- Lack of understanding of basic analytical chemistry principles
- Poor documentation practices
- No experience with quality control procedures
- Unfamiliarity with laboratory safety protocols
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