Device for conditioning a sample of liquid for analyzing with internal filter

Claim 1

In a device for conditioning a sample of liquid for analyzation, said device comprising: a central receptacle, a plurality of calibrated peripheral cells on the periphery of the central receptacle, each cell having two parallel walls for an optical measurement and connected to said central receptacle receiving said sample, each of said cells being a reagent containing cell, said device further comprising for each cell, means for conveying the sample of liquid from the receptacle to said cell to fill it completely by centrifuging and escape means for the air contained in said cell to said receptacle, said conveying means comprising an inlet orifice in each cell, said escape means comprising an orifice nearer to the axis of rotation than said inlet orifice and leading into said receptacle, said orifices being of such size as to retain the liquid contained in each cell after complete filling thereof, and centrifuging has ceasesd, the improvement comprising a filter disposed between the central receptacle and said calibrated peripheral cells for prevention of passage of solid particles in suspension from said central receptacle to said calibrated peripheral cells.