Reference Material For Instrument Calibration

Short Description:

The CRM is used for the quality control and calibration of analytical instruments in analysis of ferrosilicon. It is also used for the evaluation and verification of accuracy of the analytical methods. The CRM can be used for the transfer of measured value.

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Product introduction

Certified Values

Table 1. Certified Values for YSBC 28604a-2013 (Mass Fraction %)

Number	Elements	C	S	Si	Mn	P	Fe	Al
YSBC 28604a-2013	Certified Values	0.050	0.002	69.96	0.256	0.023	26.57	1.26
YSBC 28604a-2013	Uncertainty	0.003	0.001	0.10	0.004	0.001	0.06	0.02
Number	Elements	Ca	Cu	Ni	Cr	Ti	Mg
YSBC 28604a-2013	Certified Values	0.649	0.013	0.010	0.049	0.107	0.019
YSBC 28604a-2013	Uncertainty	0.005	0.001	0.001	0.002	0.004	0.001

Analysis Methods

Table 2. Analysis Methods

Composition	Method
C	The Infrared absorption method Gas-volumetric method
S	The Infrared absorption method Combustion iodometric method
Si	Perchloric acid dehydration gravimetric method Silicon potassium fluoride titrimetric method
Mn	Periodate photometric method ICP-AES
P	Bismuth phosphomolybdate blue spectrophotometric method Antimony phosphomolybdate blue spectrophotometric method ICP-AES
Fe	Potassium dichromate titration method
Al	EDTA titrimetric method The chrome azurol S photometric method ICP-AES
Ca	ICP-AES AAS
Cu	BCO spectrophotometric method ICP-AES AAS
Ni	Dimetylglyoxime spectrophotometric method ICP-AES
Cr	Diphenyl carbon acyl dihydrazide photometry ICP-AES
Ti	Diantipyryl methane photometric method ICP-AES
Mg	ICP-AES AAS

Homogeneity Test and Stability Inspection

Expiration of certification: The certification of this CRM is valid until November 1, 2023.

Table 3. Methods for homogeneity testing

Composition	Analysis methods	Minimum sample (g)
Si	Silicon potassium fluoride titrimetric method	0.1
C、S	The Infrared absorption method	0.2
Mn、P、Al、Ca、Cu、Ni、Cr、Ti、Mg	ICP-AES	0.2
Fe	Potassium dichromate titration method	0.2

Packing and Storage

The certified reference material is packed in glass bottles with plastic covers. The net weight is 50 g each. It is suggested to keep dryness when stored.