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The Shimadzu TOC-VC/TN analyzes liquid samples for total carbon (TC),
inorganic carbon (IC), total organic carbon (TOC), and non-purgeable organic
carbon (NPOC). The TN unit allows for simultaneous TOC and Total Nitrogen
(TN) analysis. A known amount of sample is introduced into the instrument
and is either combusted (TC, TOC, NPOC) or acidified and purged (IC).
Carbon content is measured as CO2 by non-dispersive infrared gas analysis.
The TOC-VC combustion analyzer has a measuring range of 1mg C/L to 25,000mg
C/L with reproducibility of 1.5% CV. It has a wide range of applications
from ultra pure water to highly contaminated water. It is capable of
multiple standard level and multiple constituent analyses in a single
automated run. The attached auto sampler facilitates analysis of up to 65
samples, and is able to perform overnight runs.
The TN unit uses a chemiluminescence detector to measure Total Nitrogen
(TN) in the range of 50 gN/L to 4000 mgN/L.
Samples should be non-viscous aqueous liquids and completely free of
undissolved particles. Acidification may be necessary before analysis. Each
reusable 40mL septum-sealed VOA vial holds 40 mL of sample and injection
volumes are between 10 and 150 L. 20mL vials are available for smaller
sample sizes and can be used for sample volume as low as 10 mL. Average run
time is 3-4 minutes per injection.
High concentration samples are analyzed by diluting to 25,000 mg/L by
the built-in automatic dilution function.
TOC VCS/TOC VCP Brochure (pdf file)
Shimadzu.com
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