Pellsys Pharma Quality Control Analyst Interview Questions and Answers

To check absorbance in a UV visible spectrophotometer, prepare a sample, set the wavelength, adjust the blank, and measure the absorbance.

• Prepare a sample by diluting or extracting the substance of interest.

• Set the wavelength on the spectrophotometer to the desired value.

• Adjust the blank by measuring the absorbance of a solvent or reagent without the substance.

• Measure the absorbance of the sample by placing it in the s...read more

Absorbance with HPLC can be checked by measuring the amount of light absorbed by a sample at a specific wavelength.

• Prepare a sample solution and inject it into the HPLC system.

• Set the wavelength of the detector to the desired value.

• Record the baseline absorbance of the mobile phase.

• Inject the sample and measure the absorbance of the eluting peaks.

• Compare the absorbance values with known standards or specifications.

• Ensu...read more

Dissolution analysis involves studying the rate at which a substance dissolves in a solvent.

• Dissolution analysis is performed to determine the dissolution rate of a substance.

• It involves measuring the amount of substance dissolved over time.

• Various techniques like UV spectroscopy, HPLC, or dissolution testers can be used for analysis.

• Factors like temperature, pH, and agitation speed can affect dissolution rates.

• Results...read more