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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The amount of gum indicates the condition of the sample at the time of the measurement. The general procedure for the determination of the gum content in fuels is described in the following standards: Mercury, or its vapor, may be hazardous to health and corrosive to materials. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Gum can also be caused by chemical reactions of some fuel components with each other or with oxygen. 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 residue is washed with heptane after the evaporation to remove any additives the gasoline was initially blended with. 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.

No other units of measurement are included in this standard. Outlets can be individually checked for uniform flow of air or steam. Historical Version s – view previous versions of standard. The user should, however, realize that the test method is not of itself correlative to induction-system deposits. Gum content of fuels.

Steam Generator or Rotary Compressor is required for operation.

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

The quality of different fuels, e. Copyright Stanhope—Seta Limited 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 stick.

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How to measure the gum content of fuels. 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.

This website uses astmm to improve user experience. For motor gasoline an additional treatment is necessary: 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. The gum content can be used to judge the quality of various products.

Why is measuring the gum content important? 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. Large quantities of gum are an indicator for the contamination of fuel caused by higher boiling oils or particles.

Determination of the existent gum content of aviation turbine fuel – Jet evaporation method. The asgm of steam or air is adjusted by an inlet control valve and monitored on a Bourdon gauge calibrated for both air and steam.

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.

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.

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. By using our website you consent to all cookies in accordance with our Cookie Policy.

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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. In this case, the beaker containing the residue is weighed before and after the washing procedure.

See detailed specifications Available accessories Request a quotation Download a catalogue page pdf More products in this subcategory. 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.

Generally, the gum content reflects inappropriate production processes and poor fuel handling in the refinery or the storage facility.

The bath has five test wells, and a thermometer well. This residue can be a result of, e. How can I measure the gum content? Historical Version s – view previous versions of standard Translated Version s: For specific warning statements, see 6. A Solid Block Bath designed x381 carry out up to five simultaneous tests for determining existent gum content in fuels by the Jet Evaporation method.

What is the gum content? The gum content is the nonvolatile residue that is left after the evaporation of the sample under controlled conditions. Link to Active This link will always route to wstm current Active version of the standard. Calibration and verification equipment available.

Seta Existent Gum Solid Block Bath – Steam or Air

The use of air, on the other hand, is used for testing motor gasoline. Caution should be taken when handling mercury and mercury containing products. This is the reason why stabilizing agents, such as oxidation inhibitors, are added in order to increase the fuel stability.