Reagent Preparation

Question 1

Analytical or reagent grade

Answer 1

Highest purity - grade of choice
Lot analyzed
Meets max limit of impurities established by the American chemical society

Question 2

Chemically pare (cp) grade

Answer 2

Less pure than analytical

Impurities not listed

Question 3

USP & NF

Answer 3

Intended for pharmasatical work standers set by USP AND NF
Impurities are specified

Question 4

Purified, pure grade, practical

Answer 4

High quality -standards not stated
Must be analyzed prior to analytical use
Some lab solvents use this grade

Question 5

Technical or commercial grade

Answer 5

Not used in laboratories
High degree of impurities
Used for commercially or manufacturing

Question 6

Order of Stans

Answer 6

Colour index # - 5 digit number standardized nomenclature

Question 7

Certified Stans

Answer 7

Tested by the biological stain commission, tested
-Chemically
- Spectrophotometrically
- Through implementation of a standard staining method
A batch of stain kept on permanent file

Question 8

Labeling requirements

Answer 8

Date received at lab
Product name
- safe handling precautions
- Reference to SDs
Optional hazard pictogram

Question 9

Additional lab reagent labeling requirements

Answer 9

Date of prep
Initials
Indication of passing quality control checks
In use date
Expiration date