5 coulometer cell with karl fischer oven, 6 coulometer cell with sample changer, Coulometer cell with karl fischer oven – Metrohm 851 Titrando User Manual
Page 39: Coulometer cell with sample changer
■■■■■■■■■■■■■■■■■■■■■■
3 Installation
851 Titrando
■■■■■■■■
31
4
4 Place the stopper with the attached aspiration tip into the ground-
joint opening with the ground-joint sleeve.
Insert the aspiration tip into the coulometer cell until it touches the
vessel base.
3.5.5
Coulometer cell with Karl Fischer oven
When samples release their water only slowly or only at higher tempera-
tures, the oven method is used. The sample is heated in a KF oven (e.g.
860 KF Thermoprep) and the water that is released is transferred to the
coulometer cell with a carrier gas. A detailed description of setting up the
coulometer cell with the KF oven can be found in the respective manual.
3.5.6
Coulometer cell with sample changer
If a large number of samples have to be processed, the determination of
the water content can be automated with the aid of a sample changer
with oven module (e.g. 874 Oven Sample Processor). A detailed descrip-
tion of setting up the coulometer cell with the sample changer can be
found in the respective manual.