CBC-5D is a tri-level assayed hematology control for monitoring performance of BECKMAN COLUTER 5 part differential hematology analyzers . It has 75-day closed vial stability with 14-day open vial stability. It is available in a pack size of 3×5 ml (all 5 vial of any individual level or all 3 different levels (L,N,H)). WBC diff 5 Part Level 3 (L,N,H) Close Vial Stability 105 Days Open Vial Stability 14 Days Vial Volume 5 ml