The Countess Reusable Slide (Cat. No. A25750) is compatible with the Countess II FL and the Countess 3/3 FL instruments. However, they require a reusable slide holder specific to the instrument. The Countess 3 & 3 FL Reusable Slide Holder (Cat. No. A48208) and the Countess II FL Reusable Slide Holder (Cat No. AMEP4746) are shipped with the instrument and can be purchased separately.
The slide holder can be held inside the back of the instrument, next to the light cube removal tool.
Find additional tips, troubleshooting help, and resources within our Cell Analysis Support Center.