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Each active probe installed in your instrument is fitted with a protective "shipping membrane"
which must be removed and replaced with a new membrane from the starter supplies.
The Sample Chamber is color coded to assist you in membrane installation and setup. The left
side of the chamber has a black probe housing, and the right side has a white probe housing.
(Throughout this manual, whenever we refer to the "black" or "white" probe, the reference is to
the "black" or the "white" side of the sample chamber.)
The 2700 SELECT is shipped to you already configured as a Single Channel or a Dual Channel
unit. For the single channel configuration, the white probe is a blank (see Figure 2.4).
Figure 2.4
Sample Chamber/Sensor Configurations
One or more packs of YSI Immobilized Enzyme Membranes is provided in the starter supplies.
Each pack contains four membranes. Enzyme Membrane O-rings are color-coded for each type
of chemistry. For dual channel configurations it is important that you note which probe, black
or white, you use to install specific membranes. It will be necessary to assign chemistry to
probe during instrument parameter programming.
For single channel configuration the YSI Enzyme Membrane must be installed on the black
probe. The blank is sealed in the chamber. You need not remove it.
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