PTL Resistance and Water Properties

The purpose of this procedure is to determine the electrical bulk resistance of the porous transport layer (PTL) as well as the pore size distribution (PSD), mean flow pore diameter, and water contact angle of the PTL.  This protocol assumes that the PTL has been thoroughly cleaned prior to testing.   This protocol also assumes that the PTL being tested has uniform thickness and is defect-free. This SOP was prepared by Guido Bender.