Fine substance capture filter, glass substrate for fine substance observation, fine substance observation apparatus, fine substance capture method, and fine substance observation method

摘要

Provided are a minute substance capturing filter capable of separating minute substances in a solution, and a glass substrate for observing minute substances that enables direct observation of minute substances on the filter. Fine substance having an average pore diameter of 5 to 2500 nm and 90% or more of the pores within the range of 60 to 140% of the peak top pore diameter in the pore diameter distribution on a volume basis Capable of separating and capturing fine substances having an average particle diameter of 10 to 500 nm contained in a capture filter or a solution or suspension, and having an average pore diameter of 30 to 500% of the average particle diameter of the fine substances The standard deviation of the average pore diameter at the outermost surface of the glass substrate for observing the fine substance is within the range of 60% or less of the average particle diameter of the fine substance, and 90% of the pores on the volume basis. The above is the glass substrate for observing a minute substance contained in the range of 60 to 140% of the peak top pore size in the pore size distribution.