Device and method for the quantitation of a volume of a sediment or of a volume of a fluid which does not flow easily

摘要

PCT No. PCT/NL90/00083 Sec. 371 Date Dec. 13, 1991 Sec. 102(e) Date Dec. 13, 1991 PCT Filed Jun. 14, 1990 PCT Pub. No. WO90/15664 PCT Pub. Date Dec. 27, 1990.Device for measuring off of a volume of a flowable material, comprising a centrifugable reservoir provided with a bottom, side-walls and an entrance opposite the bottom, and an occludable aperture which is spaced between the bottom and entrance both when the aperture is open and when the aperture is closed. The aperture can be closed for collecting an overmeasure of the material in the reservoir pressed towards the bottom thereof during a first centrifuge run and can be opened for discharging the excess volume of the material during a second centrifuge run such that an exactly predetermined volume of the material is retained in the reservoir between the aperture and the bottom.