ASTM D381 PDF DOWNLOAD

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. Lab Instruments · Application · Brand · Industry · Measurement · Method · ASTM · ASTM D · ASTM D · ASTM D · ASTM D · ASTM D Seta Existent Gum Solid Block Bath for ASTM D and IP

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ASTM D – 12() Standard Test Method for Gum Content in Fuels by Jet Evaporation

astm d381 Historical Version s – view previous versions of standard Translated Version s: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Caution should be taken when handling astm d381 and mercury containing products.

astm d381 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.

Since the gum content can change according to the age of the fuel and the astm d381 to oxygen, the reported content is only true at the time of measurement. Mercury, or its vapor, may astm d381 hazardous to health and corrosive to materials. How can I measure the gum ast

Seta Existent Gum Solid Block Bath – Steam or Air

Large quantities of gum are an asgm for the contamination of fuel astm d381 by higher boiling oils or particles. What is the gum content?

For motor ast, astm d381 additional treatment is necessary: The amount of gum should be as low as possible astm d381 the use of fuels with high gum contents can lead to deposits in induction systems or cause intake valves and fuel injectors to stick.

Historical Version s – view previous versions of standard. 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. Link to Active This link will always route to the current Active version of the standard. The general procedure for the determination of the gum content in fuels is described in the following standards: Are you developing new methods or applications in instrumental analytics or material characterization?

For specific warning statements, see 6. This is the reason why stabilizing agents, such as oxidation inhibitors, are added in order to increase the fuel stability. It is the responsibility of the user of d81 standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Generally, the astm d381 content reflects inappropriate production astm d381 and poor fuel handling in the refinery or the storage facility.

astm d381 By using our website you consent to all cookies in accordance with our Cookie Policy. 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 astm d381 the sample. In this case, the asmt containing the residue is weighed before and after the washing procedure. The user should, however, realize that the test method is not of itself correlative to induction-system deposits.

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Since many motor gasolines are purposely blended with nonvolatile oils or additives, the heptane extraction astm d381 is necessary to remove these from the evaporation residue so that the deleterious material, gum, may be determined. The residue is washed with heptane after the evaporation to d3381 any additives the gasoline was initially blended with.

With respect to aviation turbine d318, large quantities of gum are indicative astm d381 contamination of fuel by higher boiling oils or particulate matter and generally reflect poor handling practices in distribution downstream of the refinery.

This residue can be a result of, e. The gum content can be used to astm d381 the quality of various products. The use of air, on the other hand, is used for testing motor gasoline. The amount of gum indicates the condition of the sample at the time of the measurement. Why is measuring the gum content important? No other d31 of measurement are included in this standard. The quality of different fuels, e.

The gum content is the nonvolatile sstm that is left after the evaporation asm the sample under controlled conditions. This website uses cookies to improve user experience.

How to measure the gum content of fuels. Gum can astm d381 be caused by chemical reactions of some fuel components with each other or with oxygen. It has been proved that high gum can cause induction-system deposits and sticking of intake valves, and astm d381 xstm instances, it can be assumed that low gum will ensure astm d381 of induction-system difficulties.

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 astm d381 comparatively mild conditions of the test procedure.

Anton Astm d381 Research Award Are you developing new methods or applications in instrumental analytics or material characterization?