Metrohm 882 Compact IC plus – Cation - Manual (Page 72)

6.1 Problems and their solutions ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
64 ￭￭￭￭￭￭￭￭ 882 Compact IC plus – Cation
Problem Cause Remedy
Separation column – dead
volume at column head. ￭ Install the separation column in reverse
flow direction (if permitted by the leaflet)
and rinse into a beaker.
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 38).
Precision problems -
significant scatter-
ing of the measured
values Injection valve – sample
loop. Check installation of the sample loop (see
Chapter 3.12.1, page 31).
Sample – rinsing volume
too low. Increase rinsing time (see Chapter 5.9, page
58).
Injection valve – defective. Request Metrohm Service.
Unexpected change
to the retention
times in the chroma-
tograms Separation column –
diminished separating effi-
ciency. ￭ Regenerate separation column (see Chap-
ter 5.10.4, page 61).
￭ Replace separation column (see "Connect-
ing and rinsing the separation column",
page 38).
High pressure pump –
defective. Request Metrohm Service.