Metrohm 833 IC Liquid Handling Unit - Manual (Page 80)

8 833 IC Liquid Handling Ultrafiltration Unit
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
72
75 6.1826.070 Pump tubing
(19 in Fig. 7) with yellow-yellow
stoppers for transferring the sample
76 6.1826.030 Pump tubing
(19 in Fig. 7)with orange-yellow
stoppers for transferring the filtrate
77 6.1803.070 PTFE capillary
(23 in Fig. 7)
connection pump tubing – filtration cell
(inlet)
for transferring the sample
78 6.1803.080 PTFE capillary
connection filtration cell – waste
79 6.1803.050 PTFE capillary
(23 in Fig. 7)
connection filtration cell (outlet) – pump
tubing
for transferring the filtrate
80 6.1831.100 PTFE capillary
connection pump tubing – valve
for transferring the filtrate
81 6.1831.040 PTFE capillary
connection pump tubing – valve
for transferring the filtrate
Use only the above-mentioned 6.2744.000 PVDF compression
fittings for the ultrafiltration cell connections. If 6.2744.010 PEEK
compression fittings are used then stress cracks could occur in the
ultrafiltration cell !
5 Transferring the filtrate
Connection filtration cell – pump tubing
• Attach one end of PTFE capillary 79 to the outlet opening for
the filtrate 71 on the top of the ultrafiltration cell using a PVDF
compression fitting 64 (see Fig. 22) and lead out the other
end through one of the openings on the front of the 820 IC
Separation Center.
• Screw this end onto PEEK coupling 18 on the suction side of
pump tubing 76 with the orange-yellow stoppers
(6.1826.030) using a PEEK compression fitting 17
(6.2744.010) (see Fig. 7, Fig. 24).
6 Transferring the filtrate
Connection pump tubing – injection valve
• Screw one end of PEEK capillary 80 onto PEEK coupling 21
(6.2744.034) at the delivery side of pump tubing 76 with the
orange-yellow stoppers (6.1826.030) using a PEEK
compression fitting 17 (6.2744.010) (see Fig. 7, Fig. 24).
• Lead PEEK capillary 80 through one of the openings 14 on
the front or side of the 820 IC Separation Center into the
column compartment and screw it onto connection “1” of the
injection valve instead of PTFE-aspiration tubing 63 (see
Fig. 21 and Fig. 23 of the 819/820 Instructions for Use) with a
PEEK compression fitting 17 (6.2744.010).
• Tighten up the rotary nipple on the inside of connections 22
and 28 to fix PEEK capillary 80 in position.