Metalyser
®
Portable HM1000
Instruction Manual v 5.0
5. OPERATING PROCEDURE
5.1. METHODS
The Metalyser
®
operating procedure consists of two main steps
– plating (conditioning)
and analysis. The plating step forms a plate on the surface of the Working Electrode
which can be seen as either a grey or yellow/gold layer on the tip of the electrode. The
quality of this plate is essential to achieving reliable results and therefore a secondary
conditioning step is included.
The following table illustrates which electrode to use for each element:
Elements
Analysed
Working Electrode Used
Colour of Working
Electrode after Plating
Cd, Pb
WE1
Grey
Hg
WE2
Yellow / Gold
As
WE2
Yellow / Gold
Cu
WE1
Grey
Zn
WE1
Grey
Mn*
WE1
Grey
Cr (VI)*
Chromium Electrode
Yellow/Gold
Ni*
WE3
Black (no plating required)
*Not available as standard
If WE1 is to be used in the analysis, then WE2 is not part of the circuit and has no role
in the analysis. Likewise for WE1 during analyses using WE2.
When switching between different analyses, the unused electrode needs to be removed
otherwise results may be affected.
Procedures for each parameter are detailed in the relevant application notes.
