Reactive with proteins from common Clostridia species. Antiserum is not absorbed and may react with related microorganisms. Reactive (IFA) with Cl. perfingens, Cl. sordellii, Cl. novyi, Cl. septicum, Cl. chauvoei.

Short-term (up to 6 months) store at 2-8 °C. Long term, aliquot and store at -20°C. Avoid multiple freeze/thaw cycles.