Metrohm TitrIC 4 - Manual (Page 9)

Application Bulletin 318 e
Installation Instructions of TitrIC 4
Page 9/16
4.3 Overview of all the tubing connections
The three 60-cm-FEP-tubing connections (6.1850.060, supplied with 815) are used to connect
membrane pump 1 of the 815 and the three rinsing nozzles (6.2740.020, supplied with 815) to
openings 2, 5 and 7 of the external cell (see page 7).
The 60-cm-M8-PTFE-tubing connection (6.1805.510, supplied with 815) is used to connect
membrane pump 2 of the 815 and the M8 PTFE aspiration tip (6.1543.170, supplied with 815) to
opening 1 of the external cell (see page 7).
The aspiration tip (6.1543.080) is attached by a stopper (6.2730.030) to the titration head
(6.1462.050).
The 80-cm-FEP-tubing connection (6.1850.110, supplied with 815) is used to connect the
aspiration tip (6.1543.080) at the titration head (6.1462.050) and port 2 of the 50 mL Dosing Unit.
The three 40-cm-FEP-tubing connection (6.1850.100, supplied with 807) are used to connect port
1 of the 10 mL (EDTA) and the two 20 mL Dosing Units (HCl / Auxiliary complexing solution) with
the three connectors of the 3-way stopper at opening 6 of the external cell (see page 7).
The 60-cm-FEP-tubing connection (6.1850.060) is used to connect port 4 of the 50 mL Dosing Unit
and the buret tip (6.1543.200, supplied with 807) in opening 3 of the external cell (see page 7).
A suitable length of the 0.97 mm PTFE capillary (6.1803.020, supplied with 881) is used to connect
port 3 of the 50 mL Dosing Units (using the screws 6.2744.080 and 6.2744.070) and the injection
valve of the 881 Compact IC pro.
The four 150-cm-FEP-tubing connections (6.1805.030) are connected to port 1 of the 50 mL
Dosing Units, as well as port 3 of the two 20 mL and the 10 mL Dosing Units; all four tubing
connections are then connected to the 10 L PE waste canister (6.1621.000).