At the request of our college customers, WARD’S now offers these convenient bulk refills for our exclusive Simulated ABO and Rh Blood-Typing Lab Activity (36 V 0019). Instructions for performing blood typing using WARD’S Simulated Blood and Simulated Antisera can be found in the teacher’s guide and student copymaster that accompanied your previously-purchased lab activity. Each antiserum is provided in a one liter bottle. Requires WARD’S Simulated Blood, available separately.