CHAPTER 1

Question 1

Meant for general use with aqueous solutions

Answer 1

Air displacement pipettes

Question 2

Two types of pipettes

Answer 2

Air displacement pipettes
Positive displacement pipettes

Question 3

Used for highly viscous and volatile
liquids

Answer 3

Positive displacement pipettes

Question 4

Highly accurate for standard pipetting applications

Answer 4

Air displacement pipetting

Question 5

May affect the performance of air displacement pipettes

Answer 5

Temperature
Atmospheric pressure
Specific gravity
Viscosity of the solution

Question 6

This is based on direct contact of the piston with the liquid

Answer 6

Positive displacement pipetting

Question 7

In air displacement pipettes the tips contain both the cylinder/capillary and the piston (T/F)

Question 8

In positive displacement pipettes, a certain volume of air remains between the piston and the liquid. (T/F)

Answer 8

F

Question 9

In positive displacement pipetting, the piston is in direct contact with the liquid. (T/F)

Answer 9

T

Question 10

The type of experiment you are performing and the physical properties of the liquid will determine the correct pipette tip to use. (T/F)

Answer 10

T

Question 11

A multi-purpose tip for many laboratory applications with a variety of performance requirements that range from high accuracy to reagent dispensing with greater tolerance

Answer 11

Standard Tip

Question 12

This is available for applications demanding the highest level of purity

Answer 12

Sterile standard tip

Question 13

Beneficial when the assay is sensitive to cross-contamination, or if the sample can contaminate the lower part of the pipette

Answer 13

Filter tip

Question 14

This prevents liquid from accidentally splashing the inside of the pipette, and reduces aerosols from penetrating the pipette tip cone during pipetting

Answer 14

Filter tip

Question 15

This is recommended for low volume applications in genetic studies, forensics, PCR, and radioisotope sampling

Answer 15

Filter tip

Question 16

Filter tips are recommended for low volume applications in …

Answer 16

Genetic studies
Forensics
PCR
Radioisotope sampling

Question 17

Filter tips are available with either … – both of which are designed to prevent cross-contamination

Answer 17

Self-sealing barrier
Standard filter tips

Question 18

Filter tips are available with either self-sealing barrier or standard filter tips – both of which are designed to

Answer 18

Prevent cross-contamination

Question 19

This allow you to access the bottom of test tubes, reagent bottles, flasks, and other vessels without touching the shaft of the pipette against the side of the tube.

Answer 19

Extended length tips

Question 20

This adds a layer of security to protect samples, and virtually eliminates the chance of carryover contamination.

Answer 20

Extended length tips

Question 21

The longer tip length allows you to reach the bottom of long or narrow vessels that standard tips cannot reach (T/F)

Answer 21

T

Question 22

The shorter tip length allows you to reach the bottom of long or narrow vessels that standard tips cannot reach (T/F)

Answer 22

F

Question 23

This is designed for unique pipetting applications to save time, reduce contamination, and increase accuracy, precision, and productivity

Answer 23

Specialty tips

Question 24

Specialty tips are designed for unique pipetting applications to

Answer 24

Save time
Reduce contamination
Increase accuracy, precision, and productivity

Question 25

Utilizing polymer technology makes the inner surface of the pipette tip more hydrophobic, resulting in a significant reduction in sample loss due to adhesion.

Answer 25

Low retention pipette tips

Question 26

Benefits include improved sample delivery and conservation of expensive reagents

Answer 26

Low retention pipette tips

Question 27

Benefits of low retention pipette tips

Answer 27

Improved sample delivery Conservation of expensive reagents

Question 28

This tip feature a distal end orifice that is nearly 70 percent larger than that of a standard pipette tip

Answer 28

Wide orifice tip

Question 29

This provide the added flexibility required for handling difficult-to-pipette samples

Answer 29

Wide orifice tip

Question 30

This is designed for researchers working with macromolecules like genomic DNA and are especially critical for transferring fragile cellular samples such as macrophages, hybridomas, and hepatocytes, as well as other viscous materials

Answer 30

Wide orifice tip

Question 31

Tips

Answer 31

Standard tips Filter tips Extended length pipete tips Long retention pipette tips Specialty tips Wide orifice tips Gel Loading Tips Solvent Safe Carbon Filtered Tips Individually Wrapped Tips

Question 32

Tips used for agarose gels

Answer 32

Round gel loading tips

Question 33

Tips used for your polyacrylamide gels

Answer 33

Specialized Ultra Round and Ultra Flat gel tips

Question 34

Best solution for handling the pipetting rigors of Combinatorial Chemistry.

Answer 34

Solvent Safe Carbon Filtered Tips

Question 35

These specialized tips keep strong acids, bases, and aggressive organic solvents from causing pipette failures and critical inaccuracies.

Answer 35

Solvent Safe Carbon Filtered Tips

Question 36

This is for extremely sensitive applications

Answer 36

Individually Wrapped Tips

Question 37

This is deal for extremely sensitive applications requiring strict aseptic conditions

Answer 37

Individually Wrapped Tips

Question 38

Due to their versatility and wide volume range these are the most used laboratory instruments

Answer 38

Variable volume air displacement single-channel pipettes

Question 39

Most commonly used in microplate applications, such as ELISA, PCR, or cell culture.

Answer 39

Multichannel pipettes

Question 40

Offer instant usability for small scale multichannel work.

Answer 40

Manual multichannel pipettes

Question 41

These are available as 8- or 12-channel versions to work with 96-well microplates, and as a 16-channel version to work with 384-well microplates.

Answer 41

Multichannel pipettes

Question 42

These are versatile laboratory workhorses that can be programmed to perform most laboratory tasks.

Answer 42

Electronic pipettes

Question 43

The most commonly used function of electronic pipettes is the ..

Answer 43

Aliquoting of a reagent into multiple doses - MULTIDISPENSING

Question 44

By using a multichannel electronic pipette and repeat dispensing modes in microplate filling, the time needed for filling the plate can be reduced from several minutes to less than a minute. (T/F)

Answer 44

T

Question 45

Electronic pipettes that offer adjustable tip spacing increase efficiency in samples transfers to move several samples at once between different labware formats. (T/F)

Answer 45

T

Question 46

These are used in cell and tissue culture applications, and in general laboratory liquid dosage when more than 1 ml volumes are pipetted.

Answer 46

Serological pipets

Question 47

These are made of glass or polystyrene. Plastic, disposable pipets are useful in applications where sterility is a requirement.

Answer 47

Serological pipets

Question 48

Help to aspirate and dispense liquids accurately and with precision.

Answer 48

Serological Pipet Fillers

Question 49

In serologic pipets, the speed of both aspiration and dispensing can be adjusted separately to work with a variety of liquids. (T/F)

Answer 49

T

Question 50

This is ideal for simple repetitive tasks with a dispensing range up to 5 ml.

Answer 50

Manual Stepper pipettes

Question 51

This is a reliable and easy tool for dispensing reagents directly from the reagent bottle.

Answer 51

Bulk reagent dispenser

Question 52

This offers speed and accuracy with no extra work steps in everyday liquid dispensing.

Answer 52

Bulk reagent dispenser