Page 11 - 5_TOC in daily practice

Sum parameter – Total Organic Carbon

Kit for small sample volumes

SCA-130-505

The instruments of the TOC-L series are ■ Small sample volumes
designed to successively analyze many It can also occur, however, that only a few mL
different types of samples of different of sample are available. This is usually the
concentrations. For the autosampler, sample case when there is only little sample
trays for different sample numbers and available, the sampling process is complex or
sample volumes are available. the sample is very valuable. For such cases,
the kit for small sample volumes is available.
The 5 mL syringe body can be exchanged for
a 500 µL syringe in a rapid conversion step.
Moreover, the injection slider has to be
exchanged too.

■ Specification
With this option, automatic dilution,
acidification and sparging is not possible and
the specifications are, therefore, changed as
follows:

Measurement range: TC, IC: to 2,000 mg/L
TN: to 200 mg/L

Injection volume: 150µl maximal
Diameter: 0.2 mm
To eliminate cross-contamination between NPOC-Measurement: In ASI-L with external
analyses of the different samples, the number Sparge kit
of rinsing steps can be defined in the ASI-L: 9ml Rack
software. There is usually enough sample
volume available to rinse the tubing and the ■ Example
injection system of the TOC-L several times. 5 mL sample is sufficient for NPOC
Depending on the measuring method, determination using an ASI-L, 9mL vials
injection volume, measurement range and (3 injections with 150 µL injection volumes)
rinsing steps, 10 – 20 mL of the sample is
needed.