CBC-3K is a tri-level assayed hematology control for monitoring performance of ABBOTT and URIT 5 part differential hematology analyzers . It has 75-day closed vial stability with 8-day open vial stability. It is available in a pack size of 3×3 ml (all 3 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 75 Days Open Vial Stability 8 Days Vial Volume 3 ml