| http://www.w3.org/ns/prov#value | - (a) a support member having a surface, said surface including an annular portion for supporting a sample so as to accomodate fluid flow in a normal direction thru such sample; (b) a fluid chamber housing including a cylindrical wall and an end wall cooperating to define a chamber for receiving fluid, said end wall having an annular surface cooperating with said support member annular surface to cl
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