18 Questions
What is the advantage of using standard additions in testing?
It helps to identify problems in the testing procedure
What is the purpose of adding a known concentration of the target analyte to a real sample?
To create a matrix spike for accuracy assessment
What is the purpose of performing duplicates in precision assessment?
To assess the precision of the test results
What is the formula to calculate the Relative Percent Difference (RPD)?
Absolute difference between the two results, divided by the average result, multiplied by 100
What is the purpose of control charts in quality control?
To graphically represent the results of quality control measures
What is the purpose of performance evaluation (PE) samples?
To analyze samples of known concentration as unknown samples
What is the purpose of handling test items in a laboratory?
To ensure the accuracy of test results
What is the primary goal of quality assurance in an analytical chemistry laboratory?
To ensure the quality of test results
What is an example of a quality control activity in an analytical chemistry laboratory?
Deliverable peer reviews
What is the purpose of maintaining records in a laboratory?
To ensure the validity of test reports
What is an example of a quality assurance activity in an analytical chemistry laboratory?
Process checklist
What is the purpose of a quality manual in a laboratory?
To define the quality system under which the laboratory operates
What type of record is typically maintained in a laboratory?
All of the above
What is the purpose of sub-contracting tests in a laboratory?
To increase the laboratory's capacity
Which of the following is an example of a laboratory procedure?
Fibre analysis
What is the purpose of a quality control system in a laboratory?
To ensure compliance with regulatory requirements
What type of document is used to outline the policies and procedures of a laboratory?
Quality manual
Why is it important to maintain accurate records in a laboratory?
To ensure compliance with regulatory requirements
Learn about matrix spikes and standard additions, techniques used to validate analytical test results. Understand how to perform standard additions to ensure accurate results.
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