Calibration beads for UV and violet light sources (340 to 400nm excitation). Concentrated micro bead suspension (2.5 µm) with blue fluorescence emission. Ideal as a daily QC for alignment and calibration of excitation light source and flow cell. 3mL concentrate
*This item is perishable and will only be shipped via FedEx 2nd day service Monday through Wednesday or by overnight service from Monday through Thursday.