Metrohm 833 IC Liquid Handling Unit - Manual (Page 59)

7.1 Flow diagram for dialysis
833 IC Liquid Handling Unit / Instructions for Use 8.833.1003
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7.1 Flow diagram for dialysis
Sample dialysis with the 833 IC Liquid Handling Dialysis Unit comprises
the following four steps for each sample:
1 Rinsing
Valve A: INJECT
Sample channel,
acceptor channel and
sample loop are rinsed
(for approx. 2 min).
2 Dialysis with «stopped flow»
Valve A: INJECT
The sample is dialyzed
with stationary acceptor
solution (dialysis time
approx. 10 min).
3 Transfer to sample loop
Valve A: FILL
The acceptor solution
enriched with ions from
the sample is
transferred to the
sample loop (transfer
time approx. 0.5 min).
4 Injection
Valve A: INJECT
The acceptor solution
enriched with ions from
the sample is injected
into the IC system.
To perform dialysis with the 833 IC Liquid Handling Dialysis Unit two
peristaltic pumps are required. One pump (833 Dialysis Unit) is
delivering the acceptor solution, the other one (833 Pump Unit) is
A
Inject
833
Dialysis
Unit
833
Pump
Unit
A
Inject
833
Pump
Unit
833
Dialysis
Unit
Eluent
Colum
Waste
Sample
Acceptor
Waste
A
Inject
833
Dialysis
Unit
833
Pump
Unit
Fill
833
Dialysis
Unit
833
Pump
Unit
A
Eluent
Colum
Waste
Sample
Acceptor
Waste
Eluent
Colum
Waste
Sample
Acceptor
Waste
Eluent
Colum
Waste
Sample
Acceptor
Waste