Chemical Grade
Definitions
Chemical
grade definitions from highest to lowest purity...
1.
A.C.S.
A
chemical grade of highest purity and meets or exceeds purity standards set by American Chemical Society (ACS).
2.
Reagent
High
purity generally equal to A.C.S. grade and suitable for use in many laboratory
and analytical applications.
3.
U.S.P.
A
chemical grade of sufficient purity to meet or exceed requirements of the U.S. Pharmacopeia (USP); acceptable for food, drug, or
medicinal use; may be used for most laboratory purposes.
4. N.F.
A
grade of sufficient purity to meet or exceed requirements of the National
Formulary (NF).
5. Lab
A
chemical grade of relatively high quality with exact levels of impurities
unknown; usually pure enough for educational applications. Not pure enough to
be offered for food, drug, or medicinal use of any kind.
6.
Purified
Also
called pure or practical grade, and indicates good quality chemicals meeting no
official standard; can be used in most cases for educational applications. Not
pure enough to be offered for food, drug, or medicinal use of any kind.
7.
Technical
Good
quality chemical grade used for commercial and industrial purposes. Not pure
enough to be offered for food, drug, or medicinal use of any kind
Tidak ada komentar:
Posting Komentar