Metrohm 861 Advanced Compact IC User Manual
Page 37
2.6 High-pressure pump
861 Advanced Compact IC / Instructions for Use 8.861.1033
27
tory filled with either isopropanol or methanol/water). If this is not the
case then the pump must first be rinsed with a solvent which is misci-
ble with both the previous eluent and the following eluent (e.g. ace-
tone).
1 Prepare eluent bottle
•
Prepare, microfilter (0.45
µ
m microfilter) and degas (with N
2
,
He, or vacuum) the suitable eluent for the required applica-
tion and separating column.
•
Fill eluent into eluent vessel 67 (clear glass, 2 L).
•
Place eluent bottle 67 at the front in bottle holder 6 on the 861
Advanced Compact IC (see Figure 1).
2 Install bottle attachment
•
Firmly screw threaded stopper 65 (6.1446.040; part of
6.1602.160) into the smaller threaded opening (M6) of bottle
attachment 66 (6.1602.105; part of 6.1602.160).
•
Firmly screw aspirating filter 68 onto aspirating tubing 63.
•
Pull the other end of aspirating tubing 63 through the larger
threaded opening (M8) of bottle attachment 66 from below.
•
Push O-ring (E.301.0021; part of 6.1602.160) over the free
end of aspirating tubing 63 and move it towards bottle at-
•
Push tubing nipple 64 (4.420.4300; part of 6.1602.160) over
the free end of aspirating tubing 63, move it as far as requi-
red towards bottle attachment 66 and screw it loosely in the
larger opening of bottle attachment 66.
•
Insert aspirating tubing 63 with screwed-on aspiration filter 68
into eluent bottle 67 and screw bottle attachment 66 onto
•
Pull aspirating tubing 63 so far through the opening of tubing
nipple 64 that aspirating filter 68 is touching the bottom of
Fix aspirating tubing 63 in place by screwing shut tubing
3 Mount CO
2
absorber tube
•
First place a piece of cotton wool 70 followed by CO
2
ab-
sorber 69 (e.g. Merck soda lime pellets with indicator, no.
6839.1000) in the large opening of absorber tube 72 and then
close it with the plastic lid.
•
Fasten absorber tube 72 to bottle attachment 66 with the aid
4 Connect aspirating tubing to pump
•
Insert the free end of aspirating tubing 63 into one of the ope-
nings 8 in the interior of the 861 Advanced Compact IC (see
Figure 2).
•
Pull aspirating tubing 63 sufficiently far into the interior of the