Exercise 3: Pipettes

Question 1

Pipettes are classified according to:

Answer 1

design, drainage characteristic, type

Question 2

holds or contains a particular volume but does not dispense that exact volume

Answer 2

TC ( To contain)

Question 3

pipette that will dispense the volume indicated

Answer 3

TD (to dispense/ deliver)

Question 4

has continuous etched ring or two small, close continuous rings located near the top of the pipet

Answer 4

blowout pipet

Question 5

pipette where the content drains by gravity.

Answer 5

self-draining

Question 6

the last drop of liquid should be expelled into the receiving vessel

Answer 6

blowout pipet

Question 7

measuring pipette or transfer pipette:

Oswald Folin

Answer 7

Transfer

Question 8

measuring pipette or transfer pipette:

volumetric

Answer 8

transfer

Question 9

measuring pipette or transfer pipette:

Mohr

Answer 9

measuring

Question 10

measuring pipette or transfer pipette:

serologic

Answer 10

measuring

Question 11

measuring pipette or transfer pipette:

pasteur

Answer 11

transfer

Question 12

measuring pipette or transfer pipette:

automatic micropipettes and macropipettes

Answer 12

transfer

Question 13

measuring pipette or transfer pipette:

Bacteriologic

Answer 13

measuring

Question 14

measuring pipette or transfer pipette:

Ball, Kolmer or Kahn

Answer 14

measuring

Question 15

measuring pipette or transfer pipette:

micropipette

Answer 15

measuring

Question 16

can dispense different volumes

Answer 16

Measuring graduated pipet

Question 17

graduated pipette where graduations end above the tip

Answer 17

Mohr pipette

Question 18

measuring pipette that has graduated marks down to the tip

Answer 18

serological pipette

Question 19

the drainage characteristic of Mohr pipette is

Answer 19

self-draining

Question 20

the drainage characteristic of serological pipette is:

Answer 20

blowout

Question 21

which has a larger orifice, serologic or mohr?

Answer 21

serologic

Question 22

It transfers a known volume of liquid without further subdivisions.

Answer 22

transfer pipette

Question 23

calibrated to deliver accurately a fixed volume of a dilute aqueous solution.

Answer 23

volumetric pipette

Question 24

have bulb closer to the delivery tip

Answer 24

Oswald Folin

Question 25

used for accurate measurement of viscous fluids, such as blood or serum

Answer 25

Oswald Folin

Question 26

drainage characteristic of Oswald Folin:

Answer 26

blowout

Question 27

drainage characteristic of Volumetric pipetee

Answer 27

self-draining

Question 28

use of Oswald Folin

Answer 28

biologic fluids with greater viscosity than water

Question 29

pipettes that do not have calibration marks and are used to transfer solutions or biologic fluids without consideration of a specific volume and should not be used in any quantitative analytic techniques.

Answer 29

Pasteur pipettes

Question 30

most routinely used pipet in today’s clinical chemistry laboratory.

Answer 30

automatic pipette

Question 31

parts of an automatic pipette: | Used to take up and expel liquid

Answer 31

Plunger

Question 32

parts of an automatic pipette: | pushes the metal bar down which pushes the pipette tip off

Answer 32

eject button

Question 33

parts of an automatic pipette: | rotated to increase and decrease set volume

Answer 33

volume adjustment

Question 34

parts of an automatic pipette: | displays set volume and place values shown depending on pipette size

Answer 34

volume window

Question 35

parts of an automatic pipette: | highest place value which corresponds to size of pipette

Answer 35

top number

Question 36

parts of an automatic pipette: | lowest place value representing the smallesr you can accurately measure (significant figure)

Answer 36

dashes

Question 37

parts of an automatic pipette: | tube filled with air or sample liquid

Answer 37

pipette barrel

Question 38

parts of an automatic pipette: | the first stop is for ______

Answer 38

taking up liquid (set volume

Question 39

parts of an automatic pipette: | the second stop is for ________

Answer 39

forcing out liquid (extra volume)

Question 40

parts of an automatic pipette: | sized to fit a specific pipette and changes everytime there's a risk of contamination

Answer 40

pipette tip

Question 41

automatic pipettes are clasisfied based on:

Answer 41

delivery volume amount total volume capacity mechanism

Question 42

automatic pipette that dispenses only one volume

Answer 42

fixed volume

Question 43

pipette models capable of dispensing different volumes

Answer 43

variable volume

Question 44

automatic pipet capability of less than 1 mL

Answer 44

automaticc micropipet

Question 45

automatic pipet that dispenses greater than 1 mL

Answer 45

automatic macropipet

Question 46

Automatic pipette that relies on a piston for creating suction to draw the sample into a disposable tip that must be changed after each use. The piston does not come in contact with the solution

Answer 46

Air-displacement pipette

Question 47

a method used to compare the reproducibility of the different brands of pipet tips uses

Answer 47

0.1% solution of phenol red in distilled water

Question 48

Operates by moving the piston in the pipet tip or barrel, much like a hypodermic syringe, and does not require a different tip for each use (must be rinsed and blotted between samples)

Answer 48

positive displacement

Question 49

Automatic pipets that obtain the liquid from a common reservoir and dispense it repeatedly

Answer 49

Dilutors/ Dispensers

Question 50

what pipette to use when: | measuring a volume of 7ml

Answer 50

10 ml

Question 51

what pipette to use when: | measurring a volume of 3.5 ml

Answer 51

5 ml

Question 52

what pipette to use when: | measuring a volume of 1.7 ml

Answer 52

2ml

Question 53

what pipette to use when: | measuring a volume of 0.5 ml

Answer 53

1 ml

Question 54

immerse the pipette into the solution with the delivery tip about _______ deep

Answer 54

1 inch