ASTM D4807

The ASTM D4807 test method covers the determination of sediment in crude oils by membrane filtration. This test method has been validated for crude oils with sediments up to approximately 0.15 mass %.
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Why is it important to determine the sediment in crude oil by membrane filtration?

A knowledge of the sediment content of crude oil is important both in refinery operations and in crude oil commerce.

Summary of the test method

A portion of a representative crude oil sample is dissolved in hot toluene and filtered under vacuum through a 0.45-μm porosity membrane filter. The filter with residue is washed, dried, and weighed to give the final result.

Why should you use a  Tamson set-up ?

Tamson TC16 circulator pumps the bath content filled with silicon oil through the jacketed (double wall) funnel to maintain the crude oil sample mixed with toluene at 90°C. Necessary filter support, clamp, rubber stopper, 1000 mL vacuum filtering flask, glass T-piece with ground wire, insulated tubing with connectors, stand with clamps, membrane filters, and a vacuum pump are all included in our apparatus. The well insulated and robust TC16 liquid bath has a temperature range from ambient +5°C to 250°C. With the use of our special designed jacketed funnel, safe operating of this ASTM D4807 method is guarenteed and this is a huge and very important advantage. Another important feature is that all parts are grounded. Bath, support and funnel are grounded. A braided wire grounds the flask and sample in the vacuum filtering flask.

Please contact our sales team (sales@tamson.nl) to get a quotation. Or visit our webshop to get price and technical information of a Tamson apparatus to determine sediment in crude oils by membrane filtration conform to ASTM D4807.