TOC-V wet type series have a high-sensitivity NDIR which achieves ultrahigh sensitivity measurements.
TOC-VWP
Wet Oxidation TOC Analyzer
Measurement Principle
TC Measurement
Phosphoric acid and the oxidant (persulfate) are added to the sample, which is heated under UV illumination to convert the TC in the sample to carbon dioxide. This carbon dioxide flows with the carrier gas via the dehumidifier into the NDIR sample cell. The area of the carbon dioxide peak signal is measured and this peak area is converted to TC concentration using a pre-prepared calibration curve.
IC Measurement
The sample is acidified with phosphoric acid and sparged to convert the IC in the sample to carbon dioxide. This carbon dioxide is detected by the NDIR and the sample IC concentration is measured in the same way as TC.
TOC Measurement
Subtracting the IC concentration from the TC concentration determines the TOC concentration.
NPOC Measurement
The sample is acidified with phosphoric acid and sparged to eliminate the IC. The NPOC concentration is determined by measuring the TC (=NPOC) of the sample after the IC is eliminated, using the same method as for TC measurement.
PC-Control model
Total TOC analyzer operation, control, and data collection are handled by personal computer running enhanced software
Wizards allow simple input of measurement and calibration settings.
Comprehensive security functions such as password input and operator access restrictions.
All information is stored as files in the personal computer for reference and re-use.
The measurement conditions and results can be output to EXCEL or other application software or input from other application software.
Features
News / Events
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The TOC 50th anniversary special website has been opened.
The website has been established to explain the basic knowledge about TOC and describe the history of Shimadzu TOC analyzers.
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Science and Technology for Soil Preratation
We interviewed Prof. Kubo, who has been developing and disseminating the ”Soil fertility diagnosis: SOFIX [Soil Fertile Index]”, a method for visualizing soil preparation by analyzing biological properties, a goal which has been difficult to achieve with conventional technologies.
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Shimadzu has released the Certified Pre-Cleaned Vials for Total Organic Carbon Analyzers.
A warranty card is included declaring that the elution of organic impurities into the vial is less than 10µ gC/L.
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Shimadzu Enters the Field of On-Line TOC Analyzers for Pure Water with the Mercury-Free TOC-1000e, the First Analyzer in the New eTOC Series