Expiration of certification: The certification of this CRM is valid until June 1, 2024.
Table 3. Methods for homogeneity testing
Composition
|
Analysis methods
|
Minimum sample (g)
|
P
|
ICP-AES
|
1
|
As
|
HG-ICP-AES
|
1
|
F
|
Fluorine ion-selective electrode analysis
|
0.5
|
Cl
|
The potentiometric titrimetric method
|
0.5
|
Hg
|
AFS
|
0.5
|