Patent ID: 7977116

Claim:
An analysis method of obtaining information on an analyte by using an electromagnetic wave of a frequency including a frequency band which is at least a part of a frequency range of 30 GHz or more and 30 THz or less, the method comprising: holding a liquid comprising an analyte in a membrane filter; irradiating the analyte held in the membrane filter with an electromagnetic wave; and detecting a change in propagation state of the electromagnetic wave due to transmission through or reflection by the membrane filter, and obtaining information about the analyte based on a result of the detection, wherein the membrane filter comprises a non-fibrous, isotropic porous material, wherein an average pore diameter of a plurality of pores of the porous material is 0.1 μm or more, and wherein the analyte is held while being entangled with the plurality of pores of the porous material.