Quest Global Senior Controls Engineer Interview Questions and Answers

There are several types of GC columns used in quality control, including packed columns, capillary columns, and specialty columns.

• Packed columns are filled with a solid support material, such as diatomaceous earth or molecular sieves.

• Capillary columns have a small inner diameter, allowing for higher resolution and faster analysis.

• Specialty columns are designed for specific applications, such as chiral separations or an...read more

HPLC stands for High Performance Liquid Chromatography. It is a technique used to separate, identify, and quantify components in a mixture.

• HPLC is a widely used analytical technique in various industries including pharmaceuticals, food and beverage, environmental analysis, and forensic science.

• It involves the use of a liquid mobile phase and a stationary phase packed in a column to separate the components of a sample b...read more

Yes, I have used AAS in my previous role as a Quality Control Officer.

• I have experience using AAS (Atomic Absorption Spectroscopy) in analyzing samples for quality control purposes.

• I am familiar with the operation and maintenance of AAS instruments.

• I have successfully utilized AAS to detect and quantify trace elements in various samples.

• I have also interpreted and analyzed AAS data to ensure compliance with quality sta