Or maybe you can suggest an alternative?
These are labelled:
cat no. 50-260-1A
FLUORICON Multi-fluor.
Purple/Yellow Particles.
(Low Intensity) 1% w/v
2.2 um
These beads are excited by both 488 and 600(ish) lasers, and
fluoresce brightly in all channels on the dual-laser FACStar+.
My predecessor got some before I came here, & they have been
great for alignment of the sorters, and stable enough for daily
performance verification.
I'll soon run out & would like to get some more, but don't know
where they came from.
Many Thanks, Joseph.
-- Joseph Webster Flow Cytometry Facility Centenary Institute