Prolex* Staph Xtra Latex Kit^ Prolex* Staph Xtra Latex Kit, uses our blue carboxylated latex particles labelled with antibodies to E. Coli O26, E. Coli O45, E. Coli O103, E. Coli O11, E. Coli O21 and E. Coli O145 to perform a simple agglutination test