Metrohm 850 Professional IC AnCat MCS User Manual download pdf (Page 80)

4.2 Capillary connections

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

￭￭￭￭￭￭￭￭

850 Professional IC – AnCat – MCS

4.1.3 Operation

Caution

In order to avoid disturbing temperature influences, the entire system

including the eluent bottle must be protected against direct sunlight.

4.1.4 Shutting down

If the instrument is shut down for a longer period, the entire IC system

(without separation column) must be rinsed salt-free with methanol/ultra

pure water (1:4), in order to prevent eluent salts from forming crystals

which may cause subsequent damage.

Guard column and separation column are excluded from the eluent path

for rinsing. The connection capillaries are directly connected to one

another with a 6.2744.040 coupling. Rinsing is carried out with methanol/

ultra pure water (1:4) until the conductivity drops below 10 µS/cm.

Rinse with eluent for at least 15 minutes at starting up again and before

connecting the guard column and separation column.

4.2 Capillary connections

4.2.1 Operation

All connections between injection valve (see Chapter 2.14, page 41), sep-

aration column (see Chapter 2.22, page 64) and detector (see Chapter

2.19, page 58) must be as short as possible, have a low dead volume and

be completely leak-tight. The PEEK capillary after the detector must be

free of blockages (the measuring cell is tested to 5 MPa = 50 bar back-

pressure). Only use PEEK capillaries with an internal diameter of 0.25 mm

in the high pressure range between the high pressure pump (see Chapter

2.10, page 32) and the detector.

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 142 143

No comments

Metrohm 850 Professional IC AnCat MCS User Manual Page 80