Replace the Membrane for the Dissolved Oxygen Probe

How do I replace the membrane for the traditional polarigraphic-type dissolved oxygen probe using the kit with independent membranes (PS-2561) and caps (PS-2562)?
www.pasco.com/prodCatalog/PS/PS-2572_dissolved-oxygen-probe/index.cfm
www.pasco.com/legacy/PS/PS-2108_pasport-dissolved-oxygen-sensor/index.cfm
www.pasco.com/legacy/PS/PS-2169_pasport-water-quality-sensor/index.cfm

Note that this replacement procedure is different from that using the CI-6541 Membrane Replacement Kit, whose membranes are already installed in the caps.

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