FIELD: investigating or analyzing materials.
SUBSTANCE: method comprises setting the rod covered with the adhesive agent in the gas flow. The rod is allowed to stand in the flow for a time interval and then is removed. The adhesive agent together with the adherent particles is then washed out by a solvent, and the solution obtained is filtered. The presence and amount of sediment indicate the fact of sand escaping and its intensity.
EFFECT: enhanced reliability.
1 dwg
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