| 摘要 |
Disclosed herein are a porous substrate for analyzing hydrophilic substances of low molecular weight, having an exclusive molecular weight of less than 30,000, comprising a cross-linked copolymer having methylol groups, the copolymer being made of a monomer of styrenes and a cross-linking agent copolymerizable with the monomer, the outer surface of the porous substrate being hydrophilic and the pore surface thereof being hydrophobic, and a process for producing the same.
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