ISO 7530-7:1992
ISO 7530-7:1992

Status : Published (Under review)

This standard was last reviewed and confirmed in 2020. Therefore this version remains current.
Format Language
std 1 42 PDF
std 2 42 Paper
  • CHF42
Convert Swiss francs (CHF) to your currency


Silicon content can be determined in the range of 0,2 % (m/m) to 1 % (m/m). The principle is dissolution of a test portion in acid, filtration and aspiration of the test solution into a nitrous oxide-acetylene flame of an atomic absorption spectrometer, combustion of the filter, volatilization of silica, fusion of the residue, dissolution of the melt in dilute acid, aspiration of this second solution into another such flame, measurement of the absorbance of the resonance line energy from the spectrum of aluminium and comparison with that of calibration solutions at 309,3 nm.

Read sample 

Preview this standard in our Online Browsing Platform (OBP)

General information

  •  : Published
     : 1992-09
    : International Standard confirmed [90.93]
  •  : 1
     : 4
  • ISO/TC 155
  • RSS updates

Life cycle

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)