Method for taking samples

Antti Grönroos (Inventor), Jorma Ihalainen (Inventor), Hanna Kyllönen (Inventor), Hannu Mursunen (Inventor), Pentti Pirkonen (Inventor), Hannu Sekki (Inventor), Erkki Räsänen (Inventor), Pekka Savolahti (Inventor), Teemu Työppönen (Inventor), Pertti Vastamäki (Inventor), J. Rakkolainen (Inventor)

Research output: PatentPatent application


The invention relates to a method and equipment for taking a sample from a suspension containing solids and liquid. One or several samples are fractionated from the feed suspension in a fractionating chamber (1; 1.1 - 1.5) by means of one or several fractionating elements (2.1 - 2.5) so that the formation of a cake onto the surface of the fractionating element or the blocking of the fractionating element is prevented during fractionation by using ultrasonic technology and/or by rotating the fractionating element. The invention can be used, for example, for taking samples from process waters.
Original languageEnglish
Patent numberWO07135226 A1
IPCG01N 1/18,B01J 19/10,B01D 33/54,C02F 1/36
Priority date24/05/06
Filing date23/05/07
Publication statusPublished - 29 Nov 2007
MoE publication typeNot Eligible

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  • Cite this

    Grönroos, A., Ihalainen, J., Kyllönen, H., Mursunen, H., Pirkonen, P., Sekki, H., Räsänen, E., Savolahti, P., Työppönen, T., Vastamäki, P., & Rakkolainen, J. (2007). IPC No. G01N 1/18, B01J 19/10, B01D 33/54, C02F 1/36. Method for taking samples. (Patent No. WO07135226 A1). VTT Technical Research Centre of Finland.