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SFS-EN ISO 3838:en

Crude petroleum and liquid or solid petroleum products. Determination of density or relative density. Capillary-stoppered pyknometer and graduated bicapillary pyknometer methods (ISO 3838:2004)

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ISO 3838:2004 specifies methods for the determination of the density or relative density of crude petroleum and of petroleum products handled as liquids.
The capillary-stoppered pyknometer method is also for use with solids and this method may also be used for coal tar products, including road tars, creosote and tar pitches, or for mixtures of these with petroleum products. This method is not suitable for the determination of the density or relative density of highly volatile liquids having Reid vapour pressures greater than 50 kPa according to ISO 3007 or having an initial boiling point below 40 degrees Celsius.
The graduated bicapillary pyknometer method is recommended for the accurate determination of the density or relative density of all except the more viscous products, and is particularly useful when only small amounts of samples are available. The method is restricted to liquids having Reid vapour pressures of 130 kPa or less according to ISO 3007 and having kinematic viscosities less than 50 mm2/s (50 centistokes (cSt)) at the test temperature.
Special precautions are specified for the determination of the density or relative density of highly volatile liquids.

Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Sidokset
Velvoittavat viittaukset
ISO 3007:1999 Petroleum products and crude petroleum -- Determination of vapour pressure -- Reid method
ISO 3507:1999 Laboratory glassware -- Pyknometers
ISO 5024:1999 Petroleum liquids and liquefied petroleum gases -- Measurement -- Standard reference conditions
Vahvistuspäivä
24.01.2005
Julkaisupäivä
11.02.2005
Painos
2
Sivumäärä
21
Julkaisun kieli
englanti

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