Method for preparing test specimen

Abstract

A test specimen is provided which has one or more chemical substances fixed to prescribed plural independent positions on a substrate, and the quantities of the chemical substances fixed at the respective prescribed positions are the total of integer multiples of existence quantity units defined for the respective chemical substances in the range from 1 amol to 1 nmol (excluding the case in which the total quantity is zero).

1 . A method for preparing a test specimen, comprising:
 applying onto prescribed plural independent positions on a substrate plural liquid droplets of two or more chemical substances by an inkjet system, one droplet having a volume of not more than 50 pL,   wherein quantities of the two or more chemical substances present at each of the prescribed plural independent positions are integer multiples of existence quantity units selected from a range of 1 amol to 1 nmol, respectively, for each of the two or more chemical substances.   
     
     
         2 . The method according to  claim 1 , wherein the prescribed plural independent positions are arranged in a matrix, and proportions of the two or more chemical substances at different prescribed positions are different from each other. 
     
     
         3 . The method according to  claim 1 , wherein the two or more chemical substances are selected from the group consisting of metals, metal compounds, semiconductor materials, organic compounds of a number-average molecular weight of not more than 10,000, biological substances, metal ions, metal complexes, halogen ions, and substances having solubility of 1 ppb or more in water or an organic solvent at an ordinary temperature and pressure. 
     
     
         4 . The method according to  claim 3 , wherein the metal, the metal compound, or the semiconductor material is applied in a state of a fine particle of a diameter of not larger than 1 μm.