Filter Cards & Spacers, 48/pk

Used inside density gradient separation tubes, this pack of 48 single-use consumables from STEMCELL Technologies provides a physical barrier between whole blood or bone marrow samples and the separation medium. Each filter card seats across the tube interior, and the matching spacer holds the barrier at the proper height during centrifugation, so layered samples can be loaded without careful underlay pipetting.

The consumables are typically processed at 1200 x g for 10 minutes at room temperature in a swing-bucket or fixed-angle rotor. After centrifugation, the upper plasma layer and the barrier can be decanted in a single pour, shortening hands-on time and reducing cell exposure to the gradient. Each card and spacer pair is intended for single use and should be discarded with biohazardous waste after processing.

STEMCELL Technologies offers this 48-unit pack to support standardized workflows in immunology, cell therapy, and regenerative medicine research, where batch consistency across donor samples matters. Researchers following research use only protocols for mononuclear cell isolation, tissue processing, or downstream cell culture will find the format convenient for routine batch sizes and scale-up studies.