Expiration of certification: The certification of this CRM is valid until January 1, 2026.
Table 3. Methods for homogeneity testing
Composition
|
Analysis methods
|
Minimum sample (g)
|
Ti
|
The Ammonium ferric sulfate titration method
|
0.2
|
C、S
|
The Infrared absorption method
|
0.2
|
Mn、P、Cr、Ni、Mo、V、Cu、Al
|
ICP-AES
|
0.1
|
Si
|
Perchloric acid dehydration gravimetric method
|
0.5
|
Fe
|
Dichromate titration method
|
0.2
|