RE: Daily drift of EPICS XL

Pierre_Aeby..COSMITAL_SA..WELLA_AG@NOTES.compuserve.com
Wed, 14 May 1997 08:13:36 -0400

We have also observed 1-5% decreases in the mean intensity of fluorescent
microspheres ("DNA-check" beads from Coulter) on our EPICS XL over
periods of 3-4 hours.

Bonne journee,

Pierre Aeby
Cosmital SA
CH-1723 Marly
Pierre_Aeby.COSMITAL_SA.WELLA_AG@NOTES.compuserve.com

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On Wed, 14 May 1997, Gary Durack wrote:

A question for EPICS XL users.

We see a consistant 5-7% decrease in the mean intensity of fluorescent
microspheres measured by our EPICS XL over a period of 3 hours from
morning start up. Ambient room temperature varies less than 2 degrees.
Coulter is not sure if this exceeds any of their specifications for
performance.

My question is if this is a systemic problem. Do any other XL users see
similar behavior?