Laboratory Supervisor Practice Test

These questions are part of the practice quiz. Start practicing

• Which principle does a spectrophotometer rely on to determine concentration?
• Which of the following is an acceptable method to demonstrate continued performance?
• When collecting total or fecal coliform bacteria samples, which bottle setup and handling is correct?
• How often must a laboratory analyze PT samples to maintain full certification for an analyte?
• Which term best describes a homogeneous mixture formed when a solute dissolves in a solvent?
• Can labs use an ethics training course from another organization as long as it meets Chapter 252?
• Which QA sample involves adding known concentrations to a sample to evaluate matrix effects?
• Which item is explicitly required as part of sample acceptance documentation?
• Which QA sample is used to verify the accuracy of a method using a known concentration added to a controlled matrix?
• Which statement about calibration frequency is correct?
• Which statement correctly describes IDOC timing?
• Which of the following is a safety risk in drinking water and wastewater laboratories?
• The Standard Methods Committee, consisting of over 500 individuals who review and approve methods, is part of which publication context?
• Biochemical Oxygen Demand (BOD) measures the amount of oxygen required by
• Which QA sample is designed to be indistinguishable from production samples but known to be free of the analyte?
• Which statement describes the function of heating blocks?
• Refrigeration equipment temperatures must be recorded how often?
• General Supply Records must include which items?
• Availability of QA plan: What is required for auditors?
• What is a Data Audit?
• Which statement best describes Class A glassware?
• What describes a standard solution?
• What is a solvent?
• DMRs may also be required for Water Quality Management permits with what feature?
• What is a Matrix Spike?
• Legal responsibilities training is usually tied into ethical training for lab personnel.
• An electronic alternative to paper Discharge Monitoring Report submission is called what?
• Which records must accredited laboratories keep to show ethics training occurred?
• After reviewing external QC sample results, what should the laboratory do if performance is unsatisfactory?
• Which QC concept involves creating a replicate of the same sample through the entire analytical process?
• Availability of Quality Control information: What is required?
• What is Analyte?
• Required Lab Test Report Information requires data to be reported under whose direct supervision?
• What is reagent water?
• Synthetic Organic Chemicals are defined as
• What is a stock solution?
• Why is Analytical Quality Control particularly important in environmental laboratories?
• Which item is typically included in laboratory safety equipment?
• Disinfection Byproducts are formed when disinfectants react with what in water?
• Which concept describes the criteria for accepting or rejecting samples based on integrity, container, preservation, and labeling?
• What is Reagent?
• What is the solute?
• Standard Methods for the Examination of Water and Wastewater is best described as:
• What action should be taken when a contaminant is detected in the method blank?
• What does concentration measure in a solution?
• Which organization develops standards for materials, products, systems, and services used in research and development, product testing, and quality systems?
• Which statement best describes the procedures for samples showing damage, contamination, or inadequate preservation?
• After onsite assessment, what should be provided to the lab?
• In Pennsylvania, which statement correctly describes PA Compliance Reporting Systems?
• Which statement best describes acids?
• What is a sample duplicate?
• Which of the following best describes the focus of the Monitoring the Quality of Analysis section?
• What is a Laboratory Control Sample (LCS)?
• Which CFR Part addresses drinking water?
• Original handwritten records must be kept to reconstruct which of the following?
• What is a spike in quality control?
• What is Method?
• Which of the following is a purpose of the Quality Manual?
• Which statement about parts per million (ppm) is correct?
• What is the purpose of a Data Audit?
• Which organization publishes Handbook 44, providing specifications, tolerances, and other technical requirements for weighing and measuring devices?
• Which term describes the determination by the Pennsylvania Department of Environmental Protection that a lab can perform certain testing under Chapter 252?
• What is the purpose of using a blank sample in analysis?
• In aqueous solutions, what is true about mg/L and ppm?
• What measure reflects how acidic or basic an aqueous solution is?
• Which statement best describes the purpose of the Chemical Oxygen Demand (COD) test?
• Laboratories must have what to submit drinking water sample results using DWELR?
• In the context of adding a field of accreditation, which step comes first?
• An Initial Demonstration of Capability must include which elements?
• In Laboratory Control Sample (LCS) analysis, percent recovery is compared to what?
• What does COD stand for?
• Which of the following is a sample type mentioned in sample acceptance?
• Coliform bacteria are used as an indicator of sanitary quality in water because
• What is the primary purpose of a water bath in a laboratory?
• pH meters are devices used to measure the pH of a liquid. Which calibration practice is recommended?
• Which item requires a certificate documenting traceability to ASTM standards?
• Compliance testing is required for drinking water and wastewater facilities that meet the definitions of regulated facilities under which CFR parts?
• Volatile Organic Chemicals are described as
• Disinfection Byproducts, Byproduct Precursors, and Disinfectant Residuals are grouped under which contaminant category?
• What does Sample Holding Time refer to?
• In volatile organics (VOC) sampling, what is the required handling when filling the sample vials?
• Availability of documents: What do Pa.-accredited labs have as their QA plan?
• Which statement best describes Carbonaceous Biochemical Oxygen Demand (CBOD) measurement?
• What is a blank sample?
• When collecting fecal coliform samples from chlorinated effluents, which practice must be applied?
• What is dilution?
• General Laboratory Quality Control Requirements include which example?
• Under Pennsylvania Compliance Reporting, who submits drinking water data?
• What is the definition of Quality Assurance in a laboratory setting?
• In titration analysis, what is added to the sample?
• Which statement best describes data integrity in this laboratory context?
• LCS stands for Laboratory Control Samples. What is their primary purpose?
• Which organization governs environmental laboratory reporting in Pennsylvania?
• Which CFR Part addresses wastewater?
• In the context of adding a field of accreditation, what is Step 3?
• Discharge Monitoring Reports must be submitted by facilities with which permit type?
• Records retention: What is the requirement for logbooks vs SOPs?
• What is Drinking Water Electronic Lab Reporting (DWLER)?
• Which guidance is correct for Lead and Copper sampling to obtain a representative sample?
• Electrical conductivity meters are used to measure what in a solution, and how should they be calibrated?
• Record Maintenance: Environmental laboratories must retain records for how long?
• Which term describes the scientific technique used to perform testing or analysis on an environmental sample?
• Recordkeeping: How long must records be maintained?
• pH measures what?
• What is a mole?
• What is the name of the PA system that submits drinking water compliance monitoring results to the federal EPA?
• Which statement best describes Class A glassware compared with Class B glassware under ASTM standards?
• Which term describes a solution whose concentration is expressed as moles per liter?
• Deficiencies found: What is the deadline to submit the corrective action report?
• What does To Deliver (TD) indicate about an apparatus?
• What are acceptance criteria?
• Disinfection Byproducts may pose health risks because
• Which statement about bases is true?
• Why is a nitrification inhibitor used in CBOD testing?
• What is Relative Percent Difference (RPD) used for?
• What is a Standard Operating Procedure (SOP)?
• What is the purpose of a Proficiency Testing Sample?
• What is the purpose of a stock solution?
• Which parameter measures oxidized nitrogen species such as nitrate and nitrite?
• Title 40 CFR addresses which broad area?
• What is a Trend Chart used for?
• Why must spectrophotometer calibration data be documented in the SOP?
• In quality control practice, which term describes adding a known amount of analyte to a sample to assess recovery or QC performance?
• Under drinking water contaminants, which category covers the Lead and Copper Rule Contaminants?
• In Equipment Records, which detail serves as the unique identification for the item?
• In titration analysis, what is the measured quantity?
• What is true about Legal Responsibilities Training?
• What does Technical Training cover?
• Through which system are regulated drinking water data received from Pennsylvania-accredited laboratories?
• What should be done if a sample's analyte concentration exceeds the spectrophotometer's calibration range?
• Autoclave is:
• Handbook 44 provides specifications, tolerances, and other technical requirements for which category of devices?
• Which parameter is used to assess disinfection status in treated water?
• When should Calibration Verification be performed during an analysis day?
• The concentration of the low calibration verification standard must be within which range?
• To be accepted as a compliance monitoring method for a contaminant, where must the analytical method be listed?
• Calibration Records: Which item requires traceability to NIST standards?
• Which parameter is commonly measured to assess the buffering capacity of water?
• Incubators are devices used to grow and maintain microbiological cultures at optimal conditions. Where must working thermometers be located?
• Which item must be available to allow reconstruction of final results for compliance samples and PT samples?
• Which report summarizes effluent monitoring results for wastewater facilities?
• Which statement best describes allowable refrigerated storage temperatures for a 4°C sample?
• Which term best describes a technical supervisor of an environmental laboratory who supervises laboratory procedures and reporting of analytical data?
• In analytical testing, what term refers to the component to be identified or quantified?
• Calibration Verification Standards are used according to Pennsylvania accreditation. Which statement is true?
• Which of the following is NOT a type of solids determination?
• What does To Contain (TC) mean in laboratory glassware specifications?
• Which information is recorded as part of sample acceptance upon receipt?
• Radioactive Contaminants in drinking water are typically...
• Which statement best describes a Single Blind Sample?
• Document Control System: Which statement describes it?
• What is a Calibration Curve used for?
• Which item confirms an employee's understanding of personal ethical and legal responsibilities?
• For incubation units used in microbiology, how often should calibration-corrected temperatures be recorded?
• What is a Reference Sample?
• Inorganic Contaminants are chemical compounds of mineral origin that do not contain which elements?
• Which statement about Ethics Training is correct?
• Which entity may conduct onsite assessments of Pa. environmental labs?
• What is the primary purpose of laboratory ovens designed for high-forced volume thermal convection?
• What is the final step in adding a field of accreditation?
• Calibration Curve definition?
• How is Quality Control defined?
• ASTM class 1, 2 or 3 (Class S or S-1) certified reference weights are used for what purpose?
• If no separate preparation method is used (for example, ammonia digestion), the batch shall be defined as no more than how many environmental samples?
• A Certified NIST-reference thermometer is defined as which of the following?
• What must the corrective action report document?
• An Initial Demonstration of Capability must be conducted before using any method and under which conditions?
• Which Quality Manual section addresses permitting departures from established lab procedures?
• Which statement best describes Total Kjeldahl Nitrogen (TKN) measurement?
• Which of the following defines a conflict of interest?
• IDOC content: What must IDOC include?
• Which statement describes the National Pollutant Discharge Elimination System (NPDES)?
• Onsite assessments require corrective action within how many days?
• A method blank must be analyzed at a minimum of how many per preparation batch?
• Which statement about a Certified NIST-reference thermometer is accurate?
• In a 1.0 M solution, how many moles of solute are in 2.0 liters of solution?
• The statement "A standard solution is prepared by pipetting a stock solution into a volumetric flask and diluting to volume with solvent" is true.
• What is molarity?
• What is a Blank Spike?
• What is a Proficiency Testing Sample (PT sample)?
• What is the role of the National Institute of Standards and Technology (NIST) in measurements?
• What cleaning procedure is recommended for containers used in total phosphorus determination?
• What is a solution?
• What is a working solution?
• Onsite assessment: What document is provided to the lab?
• Which of the following is a recommended procedure to detect departures from laboratory procedures?
• What is a Quality Manual (QM) in environmental laboratory practice?
• Which describes a Double Blind Sample?
• In environmental sample terminology, which term describes the non-analyte components of a sample?
• Which organization is NOT listed as a source of approved laboratory test methods for compliance monitoring?
• Which category is NOT listed as a drinking water contaminant category?
• What is a Method Blank?
• How is CBOD measured to exclude nitrogenous demand?