Patent ID: 8323567

Claim:
A biochemical treatment device comprising: a dispensing unit holding a plurality of nozzles arranged at a first pitch P 1 in a first direction, wherein the dispensing unit can move to a position in a second direction; and the following two stages (1) and (2) aligned in the second direction and used for a treatment using the dispensing unit: (1) a first stage to place a plurality of samples arranged at the first pitch P 1 in the first direction; and (2) a second stage on which a well plate is to be placed, wherein the well plate has a matrix of wells in the first direction and in the second direction, wherein pitches of the wells in the first direction are arranged at a second pitch P 2 , wherein P 2 is defined as a pitch of the wells in the first direction, where P 2 =P 1 /n, and n is an integer other than 1, wherein the second stage moves in a manner such that one of the nozzles applied for a sample does not pass over a well in which another sample is to be treated and the plurality of samples are dispensed into the wells by moving the second stage, and wherein each of 2 to n numbers of adjacent well lines treats only one of the arranged samples.