1b.3 Pipetting

Question 1

Classification of pipet:

Water is used for calibration

Answer 1

To deliver

Question 2

Classification of pipet:

Liquid is not blown out

Answer 2

To deliver

Question 3

Classification of pipet:

Hg is used for calibration

Answer 3

To contain

Question 4

Classification of pipet:

Exact volume is delivered by repeated filling and emptying with the diluents

Answer 4

To contain

Question 5

Classification of pipet according to characteristics:

An etched or frosted ring

Answer 5

blow out

Question 6

Classification of pipet according to measuring or graduated pipets:

Has calibration marks to the tip and is generally blow out

Answer 6

serologic

Question 7

Classification of pipet according to measuring or graduated pipets:

Does not have graduations to the tip

Answer 7

Mohr

Question 8

Classification of pipet according to measuring or graduated pipets:

May either be a serological or mohr

Answer 8

Micropipet

Question 9

Mircopipets are calibrated with ___ type pipet

Answer 9

either TC or TD

Question 10

This pipet has a cylindrical bulb located midway between the mouth and the tip

Answer 10

volumetric

Question 11

T/F: volumetric pipets are blown out

Answer 11

F (drain only)

Question 12

This pipet is used for accurate measurement and other non-viscous fluids

Answer 12

volumetric

Question 13

This pipet has the greatest accuracy & precision

Answer 13

volumetric

Question 14

This pipet has a bulb located closer to the delivery tip

Answer 14

Ostwald-folin pipet

Question 15

This pipet is especially used to measure viscous fluids

Answer 15

Ostwald-folin pipet

Question 16

T/F: Ostwald-folin is a drain type of pipet

Answer 16

F (blow out)

Question 17

This pipet has no calibration marks and are used to transfer solutions or biologic fluids without consideration of a specific volume

Answer 17

Pasteur pipet

Question 18

This pipet is the most routinely used

Answer 18

Automatic pipet

Question 19

Type of automatic pipet:

Relies on a piston for suction creation to draw the sample into a disposable tip that must be changed after each use

Answer 19

Air displacement

Question 20

Type of automatic pipet:

operates by moving the piston in the pipet tip or barrel, much like a hypodermic syringe and does not require different tip for each use

Answer 20

Positive displacement