Modes of operation system operation 7-23 – Bio-Rad BioLogic Signal Import Module (SIM) User Manual

Page 152

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Table 7-10. (continued)

Fraction Collection

Description: Threshold and Collection Windows

Threshold and Collection Windows: Each Collection Window (discussed on page 7-22) can also contain a
threshold value to further discriminate when eluant can be collected. For each collection window, non-peak
eluent can be directed to waste or to the fraction collector. The Threshold and Time windows can be
combined, so the system collects fractions only during the programmed Time windows and within the Time
windows only when the detector signal is above or below the threshold.

When using the Collection Windows functions, the BioFrac and Model 2128 will skip a tube between each
window collection. For example, if the first window ends collection at 20 minutes and the second window
starts collection starting at 21 minutes, then the fraction collector will leave an empty tube for the period
between minutes 20 and 21.

Collect All

Threshold

Collection Windows

Threshold and Collection Windows

Fraction Collection Scheme

Close

Waste

Destination:

Non-peak Parameters:

Tubes

Below Threshold

Above Threshold

A

B

90

Rack:

1

1A

1F

Tube #:

Row Col.

Start:

End:

1.00

Fraction Size

ml

0.100

Threshold

1.00

4.00

5.00

0.60

1.00

Fraction Size

ml

UV Detector

Threshold Dectector

BioFrac Rack Type: F1 (12-13 mm tubes)

AU

Thresh.

(AU)

Non-Peak Frac. Size

(ml)

Start

(ml)

CollectionWindows

Fraction Collector Scheme

End
(ml)

Frac. Size

(ml)

1

2

7.00

8.00

1.00

0.000

Waste

Waste

1

2

7.00

Start

(ml)

Save Window

Finished Adding

8.00

CollectionWindows

Fraction Collector Scheme

8.00

End
(ml)

1.00

1.00

4.00

5.00

0.60

Frac. Size

(ml)

1.00

0.200

0.01

Waste

Tubes

0.0

4.0

1.00

1.00

0.01

Thresh.

(AU)

Thresh.

(AU)

Non-Peak Frac. Size

(ml)

Waste

Tubes

Non-Peak Frac. Size

(ml)

Start

(ml)

Close

Save Changes

EDIT MODE

CollectionWindows

Fraction Collector Scheme

End
(ml)

Frac. Size

(ml)

1

2

7.00

8.00

1.00

0.010

Waste

Delete Window

Cancel Editing

Close

Add Window

SELECT MODE

Delete Window

Close

ADD MODE

Delete Window

0.100

0.200

Waste

Waste

MODES OF OPERATION

SYSTEM OPERATION

7-23

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