def calc_bpe_bulk_electrolyte_resistance(characteristic_length, sigma):
    """
    The area specific charge transfer resistance through the bulk electrolyte
    units: Ohm*m2
    Notes:
        Adjari, 2006    -   "(area specific) bulk electrolyte resistance"
        Squires, 2010   -   does not explicitly define this but uses the same equation
    Inputs:
        char_length:    (m)     length of  BPE
        sigma           (S/m)   conductivity of electrolyte/buffer
    Output:
        Resistance:     Ohm*m^2
    """
    R_0 = characteristic_length / sigma
    return R_0