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I applied via Recruitment Consultant and was interviewed before Feb 2020. There were 4 interview rounds.
Internal and external standards are used in quality control to ensure accurate and reliable measurements.
Internal standard is a substance that is added to the sample being analyzed, which is used as a reference to measure the analyte of interest.
External standard is a separate sample with a known concentration of the analyte, which is used to calibrate the instrument and validate the accuracy of the measurements.
Intern...
To prepare a solution, measure the required amount of solute and dissolve it in the appropriate amount of solvent.
Determine the concentration and volume of the desired solution
Measure the required amount of solute using a balance
Add the solute to a volumetric flask or beaker
Add the appropriate amount of solvent to reach the desired volume
Stir the solution until the solute is completely dissolved
Instruments are calibrated by comparing their readings to a known standard and adjusting them accordingly.
Identify the standard to be used for calibration
Ensure the instrument is clean and free of debris
Record the initial readings of the instrument
Compare the readings to the standard and adjust as necessary
Record the final readings and document the calibration process
Primary standards are highly pure compounds used for calibration, while secondary standards are less pure and used for routine analysis.
Primary standards are used to calibrate instruments and determine the accuracy of measurements.
They are highly pure and stable compounds that can be weighed accurately.
Examples of primary standards include potassium hydrogen phthalate and sodium carbonate.
Secondary standards are used f...
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posted on 19 Nov 2020
Handling problems in analysis and reporting requires identifying the issue, troubleshooting, and implementing corrective actions.
Identify the problem by reviewing data and procedures
Troubleshoot by checking equipment, reagents, and methods
Implement corrective actions such as recalibration, retesting, or adjusting procedures
Document the problem and solution for future reference
Communicate the issue and solution to relev...
I applied via Shine and was interviewed before Apr 2022. There were 3 interview rounds.
I applied via Company Website and was interviewed in Aug 2022. There were 2 interview rounds.
posted on 20 Dec 2023
I applied via Walk-in and was interviewed before Dec 2022. There were 3 interview rounds.
I applied via Walk-in and was interviewed in Feb 2022. There were 2 interview rounds.
MCQ
I was interviewed before Dec 2021.
Troubleshooting instruments involves identifying and resolving issues with equipment used in chemical analysis.
Identify the specific issue with the instrument
Check for any error messages or abnormal readings
Consult instrument manuals or technical support for guidance
Perform routine maintenance and calibration
Consider environmental factors that may affect instrument performance
I applied via Recruitment Consulltant and was interviewed before Jul 2021. There were 3 interview rounds.
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