Shop 25 lbs., Wink™ W123®, For use in Monitoring the Performance of the VITROS ECi / ECiQ / 3600 Immunodiagnostic Systems and the VITROS 5600 / XT 7600 Integrated Systems when used for the Qualitative Detection of Antibodies to Human Immunodeficiency Virus Type 1 Group O, 20% - 3% Strength