Page 12 - 5_TOC in daily practice

Sum parameter – Total Organic Carbon

Kit for manual injection

SCA-130-506

The manual injection kit enables the analysis For gas samples, a distinction can be made
of water samples and gases. The sample for between total carbon (for instance CO or
TC determination is directly injected into the CH 4) and CO 2.
combustion chamber using a µL syringe. This
is interesting for applications where only a The kit consists of two injection blocks, which
very small sample volume is available. can be easily installed in the TOC system.
One of the injection blocks is used instead of
the IC-port; the other block replaces the TC
injection block.

The kit for small sample volumes is a module This conversion does not take longer than
for TOC analyzers that can be used for one minute.
automated sample preparation and analysis ■ Specification
of small sample amounts. The methods can For liquid samples:
be optimized in such a way that only a few Measurement range: TC, IC: to 20.000 mg/L
mL of the sample are required. Optimization Injection volume: 150µl maximal
should, however, not be at the expense of the Measurement time: TC, IC: 3 minutes
intermediate rinsing step.
Reproducibility: RSD: 2%
When even smaller amounts than the few (over 8.000mg/L: 3% )
milliliters are available, the TOC-L user can For gas samples:
fall back on the manual injection kit. Measurement range: 6ppm to 100% CO 2
Injection volume: 20µl bis 10mL
Measurement time: 2 – 4 Minuten
Reproducibility: RSD: 2%