Choosing filter configurations for Qdots in Flow

Steve Perfetto perfetto at
Thu Jun 14 21:45:56 EDT 2007


Actually, the best strategy for each Qdot detector is the use of a sharp
dichroic mirror with a wide band pass filter. After much trial and error the
attached filter configuration illustrates this point. You can also visit our
web site at;
for additional information. If your current system has a green laser, the
QD525 will be very dim because of the narrow 515/20 filter. I would
recommend using QD545 with the filters as listed in the attachment.


Stephen P. Perfetto, MS.,MT. (ASCP)
Manager, Core Flow Cytometry Facility
Vaccine Research Center, NIH
Building 40
40 Convent Dr., Room 5507
Bethesda, MD 20892-3015

email: sperfetto at
Phone: (301) 594-8659


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On 6/14/07 11:11 AM, "Roberts Joanna" <joanna.roberts at> wrote:

> Dear Flow Cytometry Community,
> I have a question about filter configurations for Qdots in flow cytometry

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