Pasteur (transfer) Pipettes: (A) are calibrated frequently (B) have many graduation marks (C) are used for very precise measurements (D) are for transferring liquids
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They are not typically calibrated frequently, nor do they have many graduation marks. They are also not used for very precise measurements. Show more…
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QUESTION 1 1. The volumetric pipette is used when the greatest accuracy and precision are required. True False QUESTION 2 1. What is the electrical equipment most often treated with? Refrigerators / Freezers Ovens Incubators Centrifuges QUESTION 3 1. Liquid-in-glass thermometers must be calibrated against a NIST certified thermometer. True False QUESTION 4 1. What type of graduated pipette is calibrated to the tip? Volumetric Micropipette Serological pipette Pasteur pipette QUESTION 5 1. Serological pipette is synonymous with Mohr pipette. True False QUESTION 6 1. How often should the temperature of a water bath be checked? Eleven times a day. Once when filling. Once a day and each time it is used. Each time it is used. QUESTION 7 1. The primary method to validate performance for 5μL micropipettes is the spectrophotometric procedure. True False QUESTION 8 Match each type of water with its corresponding description: Type I-Water A. most analytical requirements (reagents, quality control, standard preparation) Type II-Water C. It is recommended for use in procedures requiring minimal interference and maximal precision and accuracy Type III-Water/Autoclave D. Glassware washing, not for analysis or reagent preparation Tap water B. Smear stain (Gram stain) QUESTION 9 1. Which of the following is calibrated to hold only one exact volume of liquid? Graduated cylinder Volumetric pipette Erlenmeyer flask Griffin beaker QUESTION 10 1. Which of the following does not require calibration in the clinical laboratory? Liquid-in-glass thermometer Centrifuge Volumetric flask Micropipette
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Ronald P.
Part A Each item of laboratory glassware is designed for a specific use. The burette is considered an accurate piece of glassware used to deliver volumes of a liquid. Which statement is true regarding the burettes used in Chemistry 1? Burette readings must end in a 0 The burette has an accuracy to 2 decimal places Burettes are only used to deliver pure liquids Burettes are used to accurately deliver indicator in a titration The markings on a burette measure 0.10 mL
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