PRELIMS WEEK 2

Question 1

• Has the highest grade for accuracy (for qualitative and
quantitative

Answer 1

analytical reagent

Question 2

• Has undergone additional purification steps, more purified
and sensitive than (AR)
• Ideal for delicate and intricate tests (Molecular tests,
Immunoassays, chromatography, atomic absorption spectrophotometry

Answer 2

ultrapure reagent

Question 3

• Also known as pure grade
• Most chemically pure chemical, fails to reveal their tolerance,
limits of impurities because their purity is indicated by the manufacturer
• Not intended for research and analytical chemistry

Answer 3

CHEMICALLY PURE REAGENT

Question 4

most frequently used reagent in the laboratory

Answer 4

water

Question 5

• Water has been purified to remove almost all organic
materials
• Boiled and vaporized

Answer 5

distillation

Question 6

Process that uses pressure to force water through a
semipermeable membrane

Answer 6

reverse osmosis

Question 7

type III RGW is used in?

Answer 7

urinalysis or fecalysis

Question 8

_____________ Glass
Used for test procedures needing heating or sterilization

Answer 8

borosilicate

Question 9

Make use when you need excellent light transmission; used for cuvettes, for spectrophotometer

Answer 9

quartz glass/silica

Question 10

High resistance to alkaline solution; not resistant in high temperatures

Answer 10

Boron-free/soft glass

Question 11

Can be heated up to 900°C

Answer 11

vycor

Question 12

Amber bottles; used for light sensitive (photosensitive) chemicals

Answer 12

low-actinic

Question 13

Unique group of resins that are not affected by acid, alkaline solution. It can be autoclaved

Answer 13

polyolefins

Question 14

Flexible at 30 °C and brittle at 45 °C. Can be steamed and autoclaved or sterilized using chemical reagents

Answer 14

tygon

Question 15

Can resist extreme temperatures. -270 to 255 °C

Answer 15

teflon-fluorocarbon resin

Question 16

Has the same chemical resistance as linear
polyethylene

Answer 16

polypropylene

Question 17

This resin possesses excellent chemical
resistance to almost all chemicals used in the clinical laboratory

Answer 17

teflon

Question 18

Very susceptible to damage by most chemicals.
It is resistant to water, aqueous salts, food, and inorganic acids for a long period of time

Answer 18

polycarbonate

Question 19

blood clots can be cleaned by

Answer 19

10% sodium hydroxide

Question 20

• Calibrated to hold one exact volume of liquid (TC)
• Has a round, lower portion with a flat bottom and a long, thin
neck with an etched calibration line

Answer 20

volumetric flask

Question 21

___________ flask has a wide bottom that gradually evolves
into a smaller, short neck

Answer 21

Erlenmeyer

Question 22

• Has a continuous etched ring or two small, close,
continuous rings located near the top of the pipet

Answer 22

blowout pipet

Question 23

SELF DRAINING OR BLOWOUT

MOHR PIPET

Answer 23

SELF draining

Question 24

SELF DRAINING OR BLOWOUT

SEROLOGIC PIPET

Answer 24

blowout pipet

Question 25

a transfer pipet used with biologic fluids having a viscosity greater than that of water

Answer 25

Ostwald folin

Question 26

• Designed to dispense or transfer aqueous solutions and is always self-draining • Has the greatest degree of accuracy and precision and should be used when diluting standards, calibrators, or quality-control material what type of transfer pipet?

Answer 26

volumetric pipet

Question 27

Do not have calibration marks and are used to transfer solutions or biologic fluids without consideration of a specific volume

Answer 27

pasteur

Question 28

Most routinely used pipet in today’s clinical chemistry laboratory

Answer 28

automatic

Question 29

Operates by moving the piston in the pipet tip or barrel, much like a hypodermic syringe

Answer 29

positive displacement

Question 30

primarily used to prevent moisture absorption by chemicals, gases, and instrument components

Answer 30

desiccants

Question 31

Mechanical analytic balance is also known as

Answer 31

substitution balance

Question 32

Used to check the speed of a centrifuge

Answer 32

tachometer or strobe light

Question 33

Freeze drying

Answer 33

lyophilization