The present invention provides an apparatus for purifying nucleic acids such as
DNA and
RNA or proteins such as enzymes and antibodies from microorganisms such as viruses and
bacteria or animal and
plant tissues, the apparatus being capable of fast
processing of a plurality of samples. More specifically, the present invention provides an apparatus for purifying nucleic acids or proteins using magnetically attractable particles, the apparatus comprising a plurality of
piston pumps; a plurality of nozzles capable of having a plurality of disposable tips which are automatically attachable / detachable; and a mechanism which is capable of dispensing a desired amount of a
reagent to be used subsequently in the next step into the same number of sections as that of the samples with high accuracy and at a
high rate, while a mixture of a sample and a
reagent are being mixed (stirred) by the pumps and nozzles, the apparatus being capable of rapidly
processing a plurality of samples, wherein a series of steps from mixing (stirring) of the magnetically attractable particles and concentration of the sample to purification is automated with reduced wastes.