ASTM D381 PDF

D – 80e1 Standard Test Method for Existent Gum in Fuels by Jet Evaporation, E1 Specification for ASTM Liquid-in-Glass Thermometers. E29 Practice for. Evaporation, is based on ASTM D − 12, Standard Test Method for Gum Content . turbine fuels to be determined by either Test Method D or IP , with. ASTM D36 · ASTM D56 · ASTM D86 · ASTM D92 · ASTM D93 · ASTM D97 · ASTM D · ASTM D · ASTM D · HGT / Gum Testers · HGT

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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 amount of gum indicates the condition of the sample at the time of the measurement.

Historical Version s – view asfm versions of standard. 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. For motor gasoline an additional treatment is necessary: Why is measuring the gum content important?

For specific warning statements, see 6.

How to measure the gum content of fuels. The general procedure for the determination of the gum content in fuels is described in the following standards: No other units of measurement are included in this standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as d3881 of the standard.

The gum content is the nonvolatile residue that is left after the evaporation of the sample under controlled conditions. A Solid Block Bath designed to carry out up to five simultaneous tests for determining existent gum content in fuels by the Jet Evaporation method.

Generally, the gum content reflects inappropriate production processes and poor fuel handling in the refinery or the storage facility. Link to Active This link will always route to the current Active version of the standard.

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Outlets can be individually checked for uniform flow of air or steam. Astmm can also be caused by chemical reactions of some fuel components with each other or with oxygen. The flow of steam or air is adjusted by an inlet control valve and monitored on a Bourdon gauge calibrated for both air and steam.

Since many motor gasolines are purposely blended with nonvolatile oils or additives, the heptane extraction step is necessary to remove these from the evaporation residue so that the deleterious material, gum, may be determined. The quality of different fuels, e.

Seta Existent Gum Solid Block Bath – Steam or Air

Copyright Stanhope—Seta Limited Gum content of fuels. Determination of the existent gum content of aviation turbine fuel – Jet evaporation method. Jet evaporation method IP Determination of the existent gum content of aviation turbine fuel – Jet evaporation method ASTM D Standard test method for gum content in fuels by jet evaporation IP Standard test method for gum content in fuels by jet evaporation. The residue is washed with heptane after the evaporation to remove any additives the gasoline was initially blended with.

Large quantities of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles. This residue can be a result of, e. Calibration and verification equipment available.

This website uses cookies to improve user experience. The user should, however, realize that the test method is not of itself correlative to induction-system deposits. Caution should be taken when handling mercury and mercury containing products.

By using our website you consent to d31 cookies in accordance with our Cookie Policy. The bath has five test asmt, and a thermometer well.

With respect to aviation turbine fuels, large quantities of astk 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. How can I measure the gum content? 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.

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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. 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 to astj.

The gum content can be used to judge the quality of various products.

Mercury, or its vapor, may be hazardous to health and corrosive to materials. Steam Generator or Rotary Compressor is required for operation. See detailed specifications Available accessories Request a quotation Download a catalogue page pdf More products in f381 subcategory. In this case, the beaker containing the residue is weighed before and after the washing procedure. It has been proved that high gum can cause induction-system deposits and sticking of intake valves, and in most instances, it can be assumed that low gum will ensure absence of induction-system difficulties.

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.

The beaker containing the sample is weighed before and after the evaporation to determine the weight of the aastm content, which is then reported as milligrams per mL. What is the gum content?

ASTM D – 09 Standard Test Method for Gum Content in Fuels by Jet Evaporation

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The use of air, on the other hand, is used for testing motor gasoline. Historical Version s – view previous versions of standard Translated Version d81

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