The CKD Low-Alloy Cast Iron CRMs for Solid Sample Spectrometry (CRMs 241-249 A-D)

Designed for the calibration and validation of spectrochemical analysis methods using Atomic Emission Spectrometry (AES) - OE (spark emission), glow discharge or laser excitation, this set is also excellent for X-Ray Fluorescence Spectrometry.

The CRMs can be used as a set of nine or as individual samples.  Each individual CRM can be purchased separately.

Manufacture and Technical Parameters

The samples were white chill-cast on a massive copper block with controlled speed at a controlled temperature of the molten metal.  The samples are truncated pyramids with a base analytical surface (38x38 mm), a minimum total height of 20 mm and a side ledge 11-13 mm high.  The samples can be used until 1 mm of the ledge height remains.  The certified portion of a sample extends 10-12 mm from the original analytical surface.

Shrinkage cavities and porosity, which may appear in the uncertified portions of the samples do not affect the analytical performance of the certified portions.  The uncertified portions should not be used for calibration and/or validation.

Homogeneity was tested by Atomic Emission Spectrometry with an analytical area approximately 4 mm in diameter.

The CRMs were tested for random homogeneity and trend homogeneity along the height of the certified portion.  Trend homogeneity of the casting sequence was also tested.  The latter test was supported by Combustion - IR Molecular Absorption Spectrometry and Thermoevolution.

Quality Management System ISO 9001 is in force with the producer.  Production, testing and certification were carried out in compliance with the ISO-REMCO Guide 34 (2000).