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DLM 68100-09 EN Rev. A
Chapter 2: System Description
The ability of the reactor to rapidly cool down to room temperature allows the InnovOx TOC Analyzer to be
operated on very contaminated samples without building up salts and particulates in the reactor that would
require extensive maintenance in conventional TOC analyzers. When maintenance is required on the Analyzer, it
is not necessary to wait for the reactor to cool down before maintenance can be performed, or heat back up
before measurements can be made again. The InnovOx TOC Analyzer is always at room temperature, except
when organics are being oxidized.
When IC is to be measured, organics do not have to be oxidized. Therefore, the reactor is filled with the acidified
sample as described above, but the reactor is not heated and no oxidizer is added.
The CO
2
produced in the sparger by the acidification of the IC, and in the reactor by the oxidation of organics, is
separated from liquid in the gas-liquid separator. Then the CO
2
is measured in the advanced NDIR detector. This
NDIR has been especially designed for use in the InnovOx TOC Analyzer. It has no moving parts for long-term
reliability, and it is constructed with durable materials that do not require the use of consumable absorbers to
prevent attack by corrosive gases. Furthermore, the response of the NDIR is stabilized against temperature
changes by controlling the temperatures of the IR source and detector. The NDIR response also is compensated
for changes in barometric pressure, so that the InnovOx TOC Analyzer requires only infrequent recalibration.
Table 1: InnovOx Wetted Materials List
Material
Components
PFA
Clear tubing
316
SS
Sample
needle(s)
and
inlet
tube
fitting
CTFE
Ferrules
ETFE
Barb
fittings
Isoprene
Pinch
‐
valve
tubing
Titanium
Reactor,
reactor
valves
Polypropylene
Mixer
bar
Norprene
®
Chemical
with
PVC
lining
Pump
tubing
Santoprene
TM
External
pump
tubing
UHMW
polyethylene
Reactor
seals
Polypropylene,
PTFE
NDIR
filter