Astm D2500 Pdf
Adjust the position of the cork and the thermometer so that the cork ts tightly, the thermometer and the jar are coaxial, and the thermometer bulb is resting on the bottom of the jar. Popular Standards Bundles. Control and Analysis for Food and Agricultural Products. Your Alert Profile lists the documents that will be monitored.
Place the disk in the bottom of the jacket. Why should you use a Tamson liquid bath to determine manually the pour or cloud point of a petroleum product? Your email address will not be published. Never place a jar directly into the cooling medium. Shiva Krishna Bhagavatula.
This is repeated until the cloud point is determined. Gilberto Garcia de la Paz. For many specimens, the crystals rst form at the lower circumferential wall of the test jar where the temperature is lowest. With these difficult samples, drying the sample prior to testingcan eliminate this type of interference. Adjust the position of the cork and the thermometer so that thecork fits tightly, the thermometer and the jar are coaxial, andthe thermometer bulb is resting on the bottom of the jar.
But this theme is very close to me. The contrast between the opacity of the cluster and the liquid is also sharper.
Specifications subject to change without notice. This standard is also available to be included in Standards Subscriptions. Leave a Reply Cancel reply Your email address will not be published.
This standard is not included in any packages. The requiredbath temperatures may be maintained by refrigeration ifavailable, otherwise by suitable cooling mixtures. Somesamples will form large, easily observable, clusters, whileothers are barely perceptible. Mercury, orits vapor, may be hazardous to health and corrosive tomaterials.
Juan Carlos Barrera Quijano. Caution should be taken when handling mercury andmercury containing products. The jar is automatically returned to the cold bath if the cloud point is not detected. It is the responsibility of the user of this standard to establish appro- priate safety and health practices and determine the applica- bility of regulatory limitations prior to use.
It is not the intent of this test method to monitor the phase transition of the trace components, such as water. Following the cloud point measurement, testing may be continued at the operator's discretion for the pour point determination. The pour point describes a procedure for testing the fluidity of a petroleum product at a temperature.
As the temperature of these specimens decrease below the cloud point, the diffuse cluster will increase in size and can form a general haze throughout. For many specimens, the crystals first form at the lowercircumferential wall of the test jar where the temperature islowest. Edwin Andres Neuque Moreno.
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ASTM D PDF DOWNLOAD
The contrast between the opacity ofthe cluster and the liquid is also sharper. If the document is revised or amended, you will be notified by email. No other units of measurement are included in thisstandard. The cloud appears when the tempera- ture of the specimen is low enough to cause wax crystals to form.
The crystals can develop into a ring of cloud along the bottom circumference, followed by extensive crystallization across the bottom of the test jar as temperature decreases. Standard Test Method for Cloud Point of Petroleum Products Tamson offers apparatus to determine the cloud point and pour point manually. No other units of measurement are included in this standard. In addition, small brightly-reective spots can sometimes be observed inside the cluster when the specimen is well illuminated.
ASTM D2500-Cloud Point of Petroleum Products.pdf
Currency display settings. This jar is held vertically to measure the cloud point.
Standards Subscription may be the perfect solution. Tamson offers apparatus to determine the cloud point and pour point manually. The intent of the cloud point method is to capture the temperature at which the liquids in the specimen begin to change from a single liquid phase to a two-phase system containing solid and liquid.
The temperature at which a cloud is rst observed at the bottom of the test jar is recorded as the cloud point. The use of a jacket cover while the empty jacket is cooling is permitted. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. Please first verify your email before subscribing to alerts. The gasket may be made of rubber, leather, or other materialthat is elastic enough to cling to the test jar and hard enough tohold its shape.
Automated Cloud and Pour Point Scematic. The cloud appears when the tempera-ture of the specimen is low enough to cause wax crystals toform. No further reproductions authorized.
As thetemperature of these specimens decrease below the cloudpoint, the diffuse cluster will increase in size and can form ageneral haze throughout. Home Products Contacts Search. Detail Summary View all details. This standard has been approved for use by agencies of the Department of Defense.
Therefore, data from the blends of kerosene in biodiesel were not used in the precision statement. The required bath temperatures may be maintained by refrigeration if available, otherwise by suitable freezing mixtures. This standard has been approved for use by agencies of the U. Generally this water haze will not interfere with the determination of the wax cloud point. Also, the particular kerosene sample used was atypical, which complicated the study further.
Emulsificantes, Estabilizantes y Espesantes. For other more difficult samples, such as naphthenic, hydrocracked, and those samples whose cold ow behavior have been chemically altered, classification techniques in data mining pdf the appearance of the rst cloud can be less distinct. Manage society memberships. WarningExtremely flammable. The analyzer is the same as the automated pour point unit with the addition of the cloud point detection capabilities.
The dimensions of the glassware, the metal test jacket, position of probes, cooling profile, and other parameters are d as specified by the manual method. The temperature at which a cloud is first observedat the bottom of the test jar is recorded as the cloud point. Prices subject to change without notice.
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