ASTM D381 PDF

ASTM D381 PDF

ASTM D36 · ASTM D56 · ASTM D86 · ASTM D92 · ASTM D93 · ASTM D97 · ASTM D · ASTM D · ASTM D · HGT / Gum Testers · HGT The general procedure for the determination of the gum content in fuels is described in the following standards: ASTM D (“Standard Test Method for Gum. ASTM D(). Standard Test Method for Gum Content in Fuels by Jet Evaporation. standard by ASTM International, 07/01/ View all product details.

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The beaker containing the sample is weighed before and after the evaporation to determine the weight of the gum content, which is then reported as milligrams per mL. Link to Active This link will always route to the current Active version of the standard. For specific warning statements, see 6. This website uses cookies to improve user experience. The gum content is the nonvolatile residue that is left after the evaporation of the sample under controlled conditions.

Density Redefined Anton Paar has once again redefined digital density measurement with the groundbreaking invention of a new measuring principle: Gum can also be caused by chemical reactions of some fuel components with each aastm or with oxygen. What is the gum content? d3881

Seta Existent Gum Solid Block Bath – Steam or Air

Since the gum content can change according to the age of the fuel and the exposure to oxygen, the reported content is only true at the time of measurement. How to measure the gum content of fuels. Large astk of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles.

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This is the reason why stabilizing agents, such as oxidation inhibitors, are added in order to increase the fuel stability. The residue is washed with heptane after the evaporation to remove any additives the gasoline was initially blended with. How can I measure the gum content?

Historical Version s – view previous versions of standard. In this case, the beaker containing the residue is weighed before and after the atm procedure. Caution should be taken when handling mercury and mercury containing products.

The quality of different fuels, e. Historical Version s – view previous versions of standard Translated Version s: The user should, however, realize that the adtm method is not of itself correlative to induction-system deposits. The primary purpose of the test method, as applied to motor gasoline, is the measurement of the oxidation products formed in the sample prior to or during the comparatively mild conditions of the test procedure.

PAC-Lab Instruments-ASTM D

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. It is the responsibility of the user of this standard to establish d38 safety and health practices and determine the applicability of regulatory limitations prior to use.

With respect to aviation turbine fuels, large quantities of gum are indicative of contamination of fuel by higher boiling oils or particulate matter and generally reflect poor handling practices in distribution downstream of the refinery. For motor gasoline an additional treatment is necessary: The gum content can be used to judge the quality of various products.

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No other units of dd381 are included in this standard. The amount of gum indicates the condition of the sample at the time of the measurement.

During the test procedure, a measured quantity of fuel 50 mL is evaporated under controlled temperature conditions by a constant flow of either hot air or steam, depending on the sample.

Why is measuring the gum content important?

This residue can be a result of, e. The use of air, on the other hand, is used for testing motor gasoline. Generally, the gum content reflects inappropriate production processes and poor fuel handling in the refinery or the storage facility.

Anton Paar has once again redefined digital density measurement with the groundbreaking invention of a new measuring principle: In contrast to the ASTM and ISO method, the IP method allows both air or steam as the evaporating medium for examining aviation turbine fuels but requires air for testing motor gasoline. It has been proved that high gum can cause induction-system deposits and sticking of intake valves, and d318 most instances, it can be assumed that low gum will ensure absence of induction-system difficulties.