| http://www.w3.org/ns/prov#value | - Outer barrier 20 can include a thermoplastic polyester, for example a non-UV transmitting thermoplastic, a polycarbonate or polycarbonate blend, or a high-density polyethylene. [0027] Analyte permeation through the hydrophobic layer into the carrier can be modulated by a permeation modulator 35.
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