Chemical, Standard and Reagent Water

Question 1

-ACS
- established the specification of chemicals in the analytical grade category

Answer 1

American Chemical Society

Question 2

-Very high purity
- labeled in which state that the actual purity of each lot
- AR

Answer 2

Analytical Reagent

Question 3

HPLC

Answer 3

High Performance Liquid Chromatography (grade)

Question 4

• mostly used in analytical laboratory procedures and making up reagents for spectrophotometry, chromatography, trace metal analysis, and atomic absorption spectrophotometry, fluorometry and standardization process.

Answer 4

Analytical Reagent Grade

Question 5

• AAS

Answer 5

Atomical Absorption Spectrophotometry

Question 6

• they grade chemicals that are not injurious to humans and are used to produced drugs but they are not pure enough for use in most chemical procedures.
• USP and NF

Answer 6

United States Pharmacopoeia
and
National Formulary

Question 7

• the less grade chemicals are reffered to as:

Answer 7

purified and technical

Question 8

• are not recommended for reagent preparations.
• CP

Answer 8

Chemically pure

Question 9

• primarily used in manufacturing and should not be used in the clinical laboratory.
• lowest quality and not for analytical work

Answer 9

Technical or Commercial Grade

Question 10

• under which a chemical is the highest purity and can be measured directly to produce a substance of exact known concentration.
• PS

Answer 10

Primary Standard

Question 11

• states that the primary standard must habe at least 99.98% pure and that the working standard be 99.95% sure