Polystyrene beads (small diameter: 5µm) in a Trypan blue solution
Bright field polystyrene beads (small diameter: 5µm) in a Trypan blue solution at a concentration of 5 x 10^6 beads/mL.* 4 x 1mL vials good for approximately 200 counts . (* Approximate bead concentration. Refer to COA of lot # for expected concentration.) Total Concentration on CoA. Can be used on all Cellometer instruments. Warranty is valid until the expiration date stated on the product label. If no expiration is listed, the warranty is valid for 12 months from the date of product receipt.