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Flashcards in Reagents and Solutions Deck (65):
0

Process of water purification that meets specification for type I water

Deionization

2

Measured directly to produce a substance of exact known concentration and purity

Primary Standard

3

Type I reagent water is used for preparation of:

Standard solutions
Buffers
Controls
Quantitative analytical procedures
Electrophoresis
Toxicology screening test
HPLC

5

Solution property that is labile

Saturation

6

Type II reagent water is used for

Qualitative chemistry procedures
Hematology
Immunology
Microbiology
General laboratory test

7

Relationship of resistance and purity

Inverse

9

Deionization does not remove

Organic substances
Substances that do not ionize

10

Reverse osmosis does not remove

Gases

11

Blood plasma without clotting factors

Serum

12

Process of water purification that meets specifications for types II and III water

Distillation

14

Deionization removes

Ions

15

Reverse osmosis removes

90% of dissolved solids
98% of organic impurities
Insoluble matter
Microbiological organisms

16

Other process of water purification

Ultrafiltration and nanofiltration
Ultraviolet oxidation
Sterilization
Ozone
Adsorption by activated charcoal, clay, silicate or metal oxide

18

Any substance employed to produce a chemical reaction

Reagent

19

Chemical grade used in the preparation of reagents

Analytical Reagent Grade

20

Chemical grade that focuses on effect on humans

US Pharamacopeia and National Formulary

24

Concentration expression not influenced by temperature or pressure

Molality

25

Greater concentration of undissolved solute particles

Supersaturated solution

26

Chemical grade used to manufacture drugs

US Pharmacopeia and National Formulary

28

Number of atoms/elements that can combine for a particular compound

Valence

31

Measure of how well electricity passes through a solution

Conductivity

33

Most pure reagent water

Type I Reagent Water

35

Type of reagent water that cannot be stored

Type I

36

Other term for solute

Analyte

37

Component of blood that contains fibrinogen

Plasma

38

Distillation removes: _____ and _____

Minerals (Fe, Mg, Ca)
Microbiological organisms

39

Expression of hydrogen ion concentration

pH

40

Temperature at which flasks are calibrated

20 C

42

Reagent grade that does not state impurities

Chemically Pure Grade

43

Number of moles per liter of solution

Molarity

44

Other term for solvent

Biologic fluid

45

Relative amounts of substances in a solution

Concentration

46

Used in preparing dilutions made from concentrated acids

Specific gravity

47

Minimize changes in the hydrogen ion concentration of a solution

Buffers

48

Correct concentration is ensured by ____ and _____.

Quantitative transfer
Accurate measurement

49

Process of water purification that passes water under pressure through a semipermeable membrane

Reverse osmosis

50

Oxidizing agents _____ electrons

Accept

51

Molality is

the amount of solute per 1 kg of solvent

52

Labels of reagent containers include: ____, _____, and _____.

Name and concentration of the reagent
Date the reagent was prepared
Initials of the person who prepared the reagent

53

When is normality used?

Chemical titrations
Chemical reagent classification

54

Other term for technical grade

Commercial grade

55

Expresses concentration when a liquid chemical is diluted with another liquid

Volume per Unit Volume

57

Weight dependent

Osmolality

59

Pressure at which the liquid solvent is in equilibrium with water vapor

Vapor pressure

60

Freezing point is

the temperature at which vapor pressures of the liquid and solid phases are the same

61

Buffers are

Weak acids or bases and their related salts

62

Effect of agitation by a stirring rod or swirling

Removes saturated solution from contact with chemical

63

Amount of matter per unit volume of a substance

Density

64

Hastens the dissolution of solid materials

Rapid addition of solvent

65

Measure of the resistance of a substance to the passage of electric current

Resistivity

66

Boiling point is

the temperature at which the vapor pressure of the solvent reaches 1 atmosphere

67

Donate electrons

Reducing agents

69

Increases solubility of chemicals

Heating

70

Reagent water stored in borosilicate glass or polyethylene bottles

Type II or III reagent water

71

Uses of Chemically Pure Grade Reagents

Chromatography
Atomic absorption
Immunoassay
Molecular diagnostics
Standardization

72

Type III reagent water is used for

General urinalysis
Water source for preparation of types I and II
Washing and rinsing of laboratory glassware

73

Used when a solid chemical is diluted in liquid

Weight per Unit Volume

75

Categories of Reagent Grade Water

Clinical laboratory reagent water
Special reagent water
Instrument feed water
Water supplied by method manufacturer
Autoclave and wash water
Commercially bottled purified water

79

Tests for water quality

Microbial monitoring
Resistivity
pH
Pyrogens
Silica
Organic contaminants

86

Uses of laboratory reagent water

Reagent and solution preparation
Reconstitution of lyophilized materials
Dilution of samples

90

Product of deionization, filtration, and adsorption

Type I water

93

Standard Reference Materials are used to ____ and _____.

Verify calibration
Assess accuracy/bias

94

Chemical grade used for industrial purposes

Technical Grade

100

Distillation does not remove

Volatile impurities (carbon dioxide, chlorine, ammonia)

118

Terms for water of highest purity

Nitrogen-free water
Double distilled water
Conductivity water