International Standard
ISO 12937:2000
Petroleum products — Determination of water — Coulometric Karl Fischer titration method
Reference number
ISO 12937:2000
Edición 1
International Standard
Vista previa
ISO 12937:2000
No disponible en español
Publicado (Edición 1, 2000)
Esta norma se revisó y confirmó por última vez en 2024. Por lo tanto, esta versión es la actual.

ISO 12937:2000

ISO 12937:2000
CHF 63
Convertir Franco suizo (CHF) a tu moneda


This International Standard specifies a method for the direct determination of water in petroleum products boiling

below 390 °C. It covers the mass fraction range 0,003 % (m/m) to 0,100%(m/m). It is not applicable to products

containing ketones or to residual fuel oils.

This International Standard may be applicable to lubricating base oils. However, the precision has not been

established for these materials.

The precision given in clause 12 is based upon data obtained using dual-cell, dual-electrolyte systems.

NOTE 1 A number of substances and classes of compounds associated with condensation or oxidation-reduction reactions

interfere in the determination of water by Karl Fischer titration. In petroleum products, the most common interferences are

hydrogen sulfide and mercaptan sulfur, however, mass fractions of these below 0,003 % (m/m) as sulfur will not cause

significant interference over the range 0,003 % (m/m) to 0,100%(m/m) water. Other organic sulfur compounds commonly

present such as sulfides, disulphides and thiophenes, do not interfere.

NOTE 2 An alternative procedure is provided for information in annex B for the direct determination of water over the range

0,003 % (V/V) to 0,100 % (V/V) in petroleum products. The limitations under which this alternative volume measurement may be

used are listed in annex B.

NOTE 3 For the purposes of this International Standard, the terms "% (m/m)" and "% (V/V)" are used to represent the mass

and volume fraction of a material respectively.

Informaciones generales

  •  : Publicado
     : 2000-11
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 11
  • ISO/TC 28/SC 2
  • RSS actualizaciones

Ciclo de vida

¿Tiene alguna duda?

Consulte nuestras Ayuda y asistencia

Atención al cliente
+41 22 749 08 88

Horario de asistencia:
De lunes a viernes - 09:00-12:00, 14:00-17:00 (UTC+1)