The invention relates to a composition for storage and development of eggs from helminthic parasites, where the composition further comprises a liquid carrier having a pH value of below 7 at a temperature of from 10C to ambient temperature. The method includes the steps of opening a client ticket session to create a client ticket, supplying the client ticket with information, and closing the client ticket session after a predetermined time. Also described are compositions for use in catalyzed reporter deposition methods that can be used to reduce background staining, and thereby enhance peak signal separation between histograms obtained from cells stained with control immunoglobulin versus cells stained with immunoglobulin specific for an analyte of interest, in catalyzed deposition methods.