YSI 2700 SELECT

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4-4

Calibration Method (2-CalMethod).

In most chemistry setups, you will select “One Station”,

and the calibration station # will be “Station #1” (Calibration Well). However, you have options

to configure this in other ways.

Select One Station, but assign Cal Station #2. Station #2 is the Test Tube Holder

Station. For example, you may place a 500 mg/L dextrose solution in a test tube and

calibrate in this manner. If you choose this option, the sampling position is normally

Station #3 (Manual Station). With accessories, Station #4 (Turntable), or Station #5

(Monitor) may be used.

If you are running a dual chemistry where a potential interference is involved, you may

select “Two Station”. You will then be prompted to assign calibration stations for both

black and white probes. For example, you could install a sucrose membrane on one

probe and a dextrose membrane on the second probe. You could place sucrose

calibrator in the test tube position (#2) and dextrose at the Cal Well (#1). In this setup,

the instrument is programmed to measure the “dextrose reading” at the sucrose

membrane and automatically subtract it.

Black Probe Parameter (3-Black).

In this menu you choose parameters that correspond to the

chemistry of interest at the Black Probe. Be certain that you install the correct enzyme

membrane type. The selections include:

Chemistry (10 selections, plus “none”)

Unit of Concentration (g/L, mg/L, mmol/L, %(w/v))

Calibration value (must correlate to units chosen)

End Point (basically, the reaction time in the sample chamber)

For most standard applications, recommended parameter settings are outlined below under each

chemistry setup.

White Probe Parameter (4-White).

In this menu, you choose parameters that correspond to

the chemistry of interest at the White Probe. Be certain that you install the correct enzyme