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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Anton Paar has once again redefined digital density measurement c381 the groundbreaking invention of a new measuring principle: The quality of different fuels, e. The gum content is the nonvolatile residue that is left after the evaporation of the sample under controlled conditions. This residue can be a result of, e.

PAC-Lab Instruments-ASTM D

Gum can also be caused by chemical reactions of some fuel components with each other or with oxygen. This is the reason why stabilizing agents, such as oxidation inhibitors, are added in order to increase the fuel stability.

The d81 content can be used to judge the quality of various products. The amount of gum indicates the condition of the sample at the time of the measurement. Large quantities of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles.

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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. Generally, the gum content reflects inappropriate production processes and poor fuel handling in the refinery or the storage asrm. The amount of gum should be as low as possible since the use of fuels with high gum contents can lead to deposits in induction systems or cause intake valves and fuel injectors astj stick.

The general procedure for the determination of the gum content in fuels is described in the following standards: During the test procedure, 3d81 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. The use of air, on the other hand, is used for testing motor gasoline. 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.

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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.

For motor gasoline an additional treatment is necessary: The residue is washed with heptane after the evaporation to remove any additives the gasoline was initially blended with. In this case, the beaker containing the astn is weighed before and after the washing procedure. Density Redefined Anton Paar has once again redefined digital density measurement with the groundbreaking invention of a new measuring principle: How to measure the gum astj of fuels.

What is the gum content?

How to measure the gum content of fuels :: Anton Paar Wiki

Why is measuring the gum content important? How can I measure the gum content?

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