Laboratory Chemicals, Supplies and Equipment Flashcards
Purpose of Clinical Laboratory
To facilitate the correct performance of procedures that yield accurate and precise information, aiding in the patient’s diagnosis and treatment.
Role of Clinical Laboratory Scientist
To correctly use supplies and equipments and have an understanding of the fundamental concepts critical to any procedures.
2 Components of Quantitative Laboratory Result
- Actual value
- Unit
The ____ defines the physical quantity or dimension (ex. mass, length, time, or volume).
unit
The ____ was adopted internationally in 1960, and is preferred in scientific literature and clinical laboratories.
Systeme International d’Unites (SI)
Systeme International d’Unites (SI) was adopted internationally in ____.
1960
Systeme International d’Unites (SI) is based on the ____.
metric system
How many base quantities are there in SI units?
7
Base quantities
- Length (m)
- Mass (kg)
- Time (s)
- Electric current (A)
- Thermodynamic temperature (K)
- Amount of substance (mol)
- Luminous intensity (cd)
Give the name and symbol of the base quantity
Length
Meter (m)
Give the name and symbol of the base quantity
Mass
Kilogram (kg)
Give the name and symbol of the base quantity
Time
Seconds (s)
Give the name and symbol of the base quantity
Electric current
Ampere (A)
Give the name and symbol of the base quantity
Thermodynamic temperature
Kelvin (K)
Give the name and symbol of the base quantity
Amount of substance
Moles (mol)
Give the name and symbol of the base quantity
Luminous intensity
Candela (cd)
____ exist in varying grades of purity.
Analytical Chemicals
Analytical Chemicals exist in varying ____.
grades of purity
Analytical Chemicals
- Analytical reagent (AR)
- Ultrapure (UP)
- Chemically pure (CP)
- United States of Pharmacopeia (USP)
- National Formulary (NF)
- Technical or Commercial grade
Organic Reagents
- Practical grade
- Chemically pure
- Spectroscopic
- Chromatographic
- Reagent grade
Identify which Analytical Chemical is being described
Established by the American Chemical Society (ACS)
Analytical Reagent (AR)
Analytical Reagent (AR) grade is established by ____.
American Chemical Society (ACS)
Identify which Analytical Chemical is being described
Labels on reagents state either the:
* actual impurities
* maximum allowable impurities
* % of impurities
* ACS inital
* For laboratory use
* ACS standard grade reference materials
Analytical Reagent (AR)
Identify which Analytical Chemical is being described
Suitable for use in most analytical laboratory procedures
Analytical Reagent (AR)
Identify which Analytical Chemical is being described
Used for quantitative and qualitative analysis, and for accuracy.
Analytical Reagent (AR)
Identify which Analytical Chemical is being described
Used for trace metal analysis
Analytical Reagent (AR)
Identify which Analytical Chemical is being described
Used in the preparation of standard solutions
Analytical Reagent (AR)
Identify which Analytical Chemical is being described
These are reagents that have been put through an extra step or additional purification step
Ultrapure (UP)
Identify which Analytical Chemical is being described
Used in specific procedures such as:
* Chromatography
* Atomic Absorption
* Immunoassays
* Molecular diagnostics
* Standardization
* Other techniques that require extremely pure chemicals
Ultrapure (UP)
Ultrapure (UP) reagents are used in the following procedures such as ____.
- Chromatography
- Atomic Absorption
- Immunoassays
- Molecular diagnostics
- Standardization
- Other techniques that require extremely pure chemicals
Identify which Analytical Chemical is being described
Used to manufacture drugs
- United States of Pharmacopeia (USP)
- National Formulary (NF)
Identify which Analytical Chemical is being described
Limitations established for this group of chemicals are based only on the criterion of not being injurious to individuals.
- United States of Pharmacopeia (USP)
- National Formulary (NF)
Identify which Analytical Chemical is being described
Approved for human consumption
- United States of Pharmacopeia (USP)
- National Formulary (NF)
Identify which Analytical Chemical is being described
Pure enough for use in most chemical laboratories, however, purity standards are not based on the needs of the laboratory.
- United States of Pharmacopeia (USP)
- National Formulary (NF)
Identify which Analytical Chemical is being described
The impurity limitations are not stated
Chemically Pure (CP)
Identify which Analytical Chemical is being described
Preparation of these chemicals are not uniform
Chemically Pure (CP)
Identify which Analytical Chemical is being described
Purity is delivered by measurement of the melting point or boiling point
Chemically Pure (CP)
Identify which Analytical Chemical is being described
Not recommended for reagent preparation unless further purification step or a reagent blank is included.
Chemically Pure (CP)
Identify which Analytical Chemical is being described
Used in manufacturing
Technical or Commercial Grade
Identify which Analytical Chemical is being described
Should never be used in the clinical laboratory
Technical or Commercial Grade
Reference Materials
- Primary Standard
- Secondary Stadard
These are highly purified chemicals measured directly to give an exact concentration of purity which can be use for comparison.
Primary Standard
The ____ are used instead of ACS primary standard materials.
National Institute of Standards and Technology-certified Standard Reference Materials/Certified Reference Materials (NIST SRMs)
A substance of lower purity with concentration that is determined by comparison with the primary standard.
Secondary Standard
Categories of Water
- Clinical Laboratory Reagent Water (CLRW)
- Special Reagent Water (SRW)
- Instrument Feed Water
- Water supplied by method manufacturer
- Autoclave and wash water
- Commercially bottled purified water
Determine which type of water purity
Used for test method requiring minimum interference such as trace metal, iron, and enzyme analysis.
Type I
Determine which type of water purity
Used for procedures needing maximum water purity
Type I
Determine which type of water purity
Consumed immediately after it is produced
Type I
Determine which type of water purity
Acceptable for most analytic requirements, including reagent, quality control, and standard precaution.
Type II
Determine which type of water purity
For qualitative chemistry procedures and for most procedures done in hematology, immunology, microbiology, etc.
Type II
Determine which type of water purity
Glassware washing but not for reagent preparation
Type III
Determine which type of water purity
Used in urinalysis
Type III
Identify which kind of glassware
Usually a low borosilicate glass with low alkali content
High Thermal Resistant or Borosilicate Glass
Identify which kind of glassware
Resistant to high temperature, heat corrosion or thermal shock
High Thermal Resistant or Borosilicate Glass
Identify which kind of glassware
Used when heating or sterilization
High Thermal Resistant or Borosilicate Glass
Most common borosilicate glasses
- Beakers
- Flasks
- Pipettes