ViaCheck™ Viability Control 0% is a suspension of microspheres that simulate dead (or dying) cells stained with Trypan Blue. ViaCheck™ SingleShots™ minimize error and maximize efficiency by circumventing potential human error from repeated bottle resuspension & pipetting steps. BLI10BS is the SingleShot equivalent to 20mL Cat. # 24622. Supplemental ViaCheck™ Literature