Metrohm 700 Dosino, Manual

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2. Setup
700 Dosino, Instructions for Use
8
If it is not possible to loosen a connection nipple by hand then
you should use the 6.2739.000 Spanner supplied. Using the
spanner to tighten up a nipple can damage the tubing connec-
tion.
•
Place the dosing unit on the reagent bottle and screw it down.
Tighten the fixing ring (on the distributor) firmly. It is now possi-
ble to rotate the upper part of the housing in any direction you
require.
If the thread does not fit then you must use a threaded adapter,
see p. 45.
•
Fill the 6.1619.000 Adsorber tube with a suitable adsorption
material for the reagent, e.g.
−
Molecular sieve for moisture-sensitive solutions such as
KF solutions or others.
−
Soda lime for sodium hydroxide (CO
2
adsorption)
•
Screw the adsorber tube onto connection port 0 of the dosing
unit. Port 0 vents the reagent bottle. It should never be closed
completely. If no adsorber tube is required then Port 0 must
remain open.
•
Mount the 6.1805.100 Dosing tubing on Port 1 of the dosing
unit. Tighten the connection nipple by hand.
•
Depending on the application you can now screw the
6.1543.050 Titrating tip with anti-diffusion valve or the
6.1543.060 Dosing tip onto the dosing tubing. The 6.1446.030
Ball stopper supplied can be used to fix the tip in an NS14/15
ground joint opening.