Introduction; Safety Measures - Mettler Toledo DO307 Mode D'emploi

1.

Introduction

The METTLER TOLEDO DO307 Drying Oven is used for moisture determination by the Karl Fischer
method for samples where a direct moisture determination is not possible. Examples are insoluble
samples or those whose determination yield false results due to side reactions with the KF reagent. The
oven can also be an alternative to external extraction. The drying oven can be used together with both the
volumetric and coulometric METTLER TOLEDO Karl Fischer titrators.
The sample in a glass boat, or in an aluminium foil insert, is slid into a glass tube, where it is heated.
This heating drives off any moisture from the sample in the form of vapor, which is then led from the
glass tube to the KF titration cell by a stream of purge gas, such as dry air or nitrogen.
In these operating instructions we explain the functions of the oven; we assume familiarity with the
titrator used.
2.

Safety measures

The DO307 has been tested for the experiments and intended purposes documented in these Operating
Instructions. However, this does not absolve you from the responsibility of performing your own tests of
the product supplied by us regarding its suitability for the methods and purposes you intend to use it for.
You should therefore observe the following safety measures.
Measures for your protection
– Never place or install objects on or above the apparatus ! These could catch fire.
– Avoid heat buildup above the apparatus by leaving a free space of approx.
1 meter ! Readily flammable materials could ignite.
– Never touch, during or after operation , the touch guard of the oven as well as the
flange of the sample inlet, which is attached to the flange ring of the heating tube !
You could burn yourself.
– Ensure that you plug the power cable supplied into a receptacle outlet that is
grounded! In the absence of grounding, a technical fault could be lethal.
– Switch the apparatus off and disconnect the power cable before you change
blown fuses! An electric shock could be lethal.
DO307
METTLER TOLEDO
Introduction
3