Combustion catalytic oxidation / NDIR method The functionality for continuous automatic measurement has bee added to the ability of the combustion catalytic oxidation/NDIR TOC-V Series to perform high-performance, high sensitivity measurement of organic substances. The On-line TOC-VCSH can be used for Continuous automatic high-sensitivity monitoring of water samples such as pure water and tap water.

Features

• ON-LINE TOC-VCSH FeaturesCombines Combustion Catalytic Oxidation at 680°C and NDIR Method
  Easy Maintenance
  Support Software for Pharmaceutical Water Management Applications
  Wide Variety of TOC Measurement Methods

ON-LINE TOC-VCSH Features

Combines Combustion Catalytic Oxidation at 680°C and NDIR Method

Combustion catalytic oxidation at 680°C oxidizes even persistent or insoluble organic compounds. This method accurately measures any type of organic substance not affected by interfering substances or the sample properties such as pH or conductivity.

Easy Maintenance

Combustion catalytic oxidation at 680°C eliminates the need for oxidizing reagents, saving the tasks of procuring and preparing reagents. No special draining operations are needed.

Support Software for Pharmaceutical Water Management Applications

The On-line TOC-VCSH incorporates software for automatically performing tests specified by Japanese Pharmacopoeia (resolution test) and USP (system suitability test). Combining the On-line TOC-VCSH with an OCT-1 (optional) enables fully automatic testing; setting the reagent is all that is required.

Wide Variety of TOC Measurement Methods

NPOC, IC, TC and TOC (TC-IC) measurements are possible with the ON-LINE TOC-VCSH. TN measurement is also possible by adding an optional product. TOC and TN can be measured simultaneously.

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.

Extremely wide measurement range from 4 μg/L to 30,000 mg/L, applicable to everything from ultrapure water to highly contaminated water （TOC-L_CSH/CPH）

• Capable of TC, IC, TOC (= TC-IC), and NPOC measurement; options enable POC (volatile organic carbon), TOC via POC + NPOC, and even TN (total nitrogen) measurements
• The blank check function evaluates system blanks by measuring ultrapure water processed automatically within the instrument
• The automatic dilution function enables measurements up to 30,000 mg/L

Reliable sample injection system

• Automatic sample acidification and sparging
• The automatic dilution function reduces sample salinity, acidity, and alkalinity, significantly extending the period of use of catalysts and combustion tubes (The period of use depends on the sample and measurement conditions.)
• Stat or priority samples can be added at anytime to the analysis schedule without interrupting operation even when an autosampler is used

Select from 4 models to suit your application

The TOC-L series consists of a high-sensitivity model with a detection limit of 4 μg/L, making it suitable for a variety of applications, including pure water measurements, and a standard model designed with cost performance in mind. Each analyzer is available as an LCD and keyboard-equipped standalone model, or as a PC-controlled model.

In addition, the USB format has been adopted as the external interface, enhancing the equipment’s versatility. Even the standalone models are capable of output to a general-purpose PC printer or to a USB memory stick.
 

Options to further enhance functionality

With the TOC-L series, numerous options enable a variety of functional enhancements. These include simultaneous measurement of TOC and TN (total nitrogen) (when a TN unit is added), the use of compressor air (when a carrier gas purification kit is added), and the measurement of gas samples and solid samples (when a gas sample injection kit and solid sample combustion unit are added).　
Sea water sample measurement and small sample volume options have also been enhanced.
 

Space-saving and energy-saving design

The width of the instrument is 20 % less in comparison with conventional Shimadzu models. This enables more effective use of laboratory space. The instrument width is unchanged even when the TN unit is added.

This product conforms with Shimadzu’s ECO labeled product. Energy Saving: Power consumption reduced by 36 % (100 V) and 43 % (200 V) as compared to a conventional Shimadzu product. (Assuming 8 hours operation/day × 5 days/week)

Find Out the Optimal TOC Analyzer
Explore which TOC Analyzer system is ideal for your samples and applications by answering a few questions. Click the botton below to get started.

680°C Combustion Catalytic Oxidation Method

Developed by Shimadzu, the 680°C combustion catalytic oxidation method is now used worldwide. One of its most important features is the capacity to efficiently oxidize hard-to-decompose organic compounds, including insoluble and macromolecular organic compounds.

TOC (total organic carbon) Measurement

The 680°C combustion catalytic oxidation method achieves total combustion of samples by heating them to 680°C in an oxygen-rich environment inside TC combustion tubes filled with a platinum catalyst. Since this utilizes the simple principle of oxidation through heating and combustion, pretreatment and post-treatment using oxidizing agents are unnecessary, which enhances operability. The carbon dioxide generated by oxidation is detected using an infrared gas analyzer (NDIR). By adopting a newly-designed, high-sensitivity NDIR, the TOC-L series achieves high detection sensitivity, with a detection limit of 4μg/L, the highest level for the combustion catalytic oxidation method. The figure below is a schematic diagram showing TOC measurement using the 680°C combustion catalytic oxidation method and the NDIR method.

The sample is delivered to the combustion furnace, which is supplied with purified air. There, it undergoes combustion through heating to 680°C with a platinum catalyst. It decomposes and is converted to carbon dioxide. The carbon dioxide generated is cooled and dehumidified, and then detected by the NDIR. The concentration of TC (total carbon) in the sample is obtained through comparison with a calibration curve formula. 1)　Furthermore, by subjecting the oxidized sample to the sparging process, the IC (inorganic carbon) in the sample is converted to carbon dioxide, and the IC concentration is obtained by detecting this with the NDIR. 2) The TOC concentration is then calculated by subtracting the IC concentration from the obtained TC concentration. 3)

NPOC (non-purgeable organic carbon) Measurement

In environmental water and other samples in which the IC component of the TC is extremely large, significant errors may result if the abovementioned method is used for TOC measurement. Accordingly, the organic carbon in the sample is usually measured via an NPOC measurement as shown in the figure below. This method is the same as TOC measurement methods using acidification and sparging (IC removal) as described in official measurement methods (such as JIS and ASTM).

By sparging samples to which a small amount of acid has been added, the IC in the sample is converted to carbon dioxide. This carbon dioxide is removed, and the TOC is obtained by measuring the TC in the treated sample. When the carbon dioxide from the IC is removed, POC (purgeable organic carbon) may also be lost. Accordingly, the TOC obtained with this method may be referred to as NPOC. Shimadzu provides options that measure this POC, which is typically lost, enabling more complete TOC measurement.

Software Features Intuitive Operability and a Wealth of Functions

 LabSolutions TOC PC Software Enabling Simple, Intuitive Operation

The TOC-4200 is a high-performance on-line TOC analyzer, based on the proven 680°C Catalyst-aided Combustion technology. This established technology is featured in a large installed base of Shimadzu Total Organic Carbon Analyzers throughout the world, and has been applied to a broad field of industries.

Diverse Applications

Supports monitoring TOC removal rate based on EPA Regulations

• Calculates TOC removal rate based on the United States EPA regulations
  (Part IV 40 CFR Part 9, 141 and 142, 1998)
  (when a 2- or more-stream switching option is provided)

Total pollutant load control regulation applications (organic pollution load) -Japanese regulation

• Converting the measured TOC values allows applications to COD total volume control. (*1) TOC → COD conversion functions are installed as standard.
• Reading flow rate signals from a flow meter (*2) permits COD load conversion calculations.

Wastewater treatment plant influent (upstream monitoring) and effluent

• Measurements at a short measuring cycle (4 minutes minimum) rapidly capture dramatic changes in organic matter or abnormal effluent.
• The powerful oxidation capacity of a combustion-type analyzer can detect organic matter that cannot be captured using a UV meter.
• The short measuring cycle and powerful oxidation, combined with switching between up to six flow lines, offer detailed monitoring of treatment plants.

Monitoring of river water sampled at water purification plants and treated water (tap water)

• Monitoring changes in river water quality due to rainfall and other factors to provide control indicators for treatment processes.
• Permits simultaneous monitoring of treated tap water.

Plant water (washing water, cooling water, recovered water, boiler water, condensate, etc.)

• Continuous monitoring of water used in a plant.
• Continuous monitoring of pure boiler water assists in the detection of anomalies, such as damaged pipes.
• The short measuring cycle (4 minutes minimum) of the combustion-type TOC analyzer achieves more rapid detection of anomalies.

*1 The TOC-COD conversion formula must be determined separately.
*2 With attached option

TOC-4200 is granted MCERTS accreditation

The TOC-4200 online total organic carbon analyser has been granted MCERTS accreditation based upon the performance standards and test procedures set for continuous water monitoring equipment.

MCERTS is the Environment Agency of England & Wales (UK) Monitoring Certification Scheme. It provides the framework for businesses to meet quality requirements. Compliance with MCERTS gives the Environment Agency confidence in the monitoring of emissions to the environment.

MCERTS is quickly becoming an internationally required performance and reliability standard by companies and authorities around the world that want to ensure that they are doing their utmost to protect the environment around them by using equipment with this accreditation. Requirements to gain this certificate include laboratory testing and a 3-month field test under real conditions. The TOC-4200 achieved 100% uptime in the field test highlighting its robustness.

The TOC-4200 is the only online TOC analyser that utilises catalytic combustion oxidation technology, with MCERTS accreditation, available on the market. This technology is a clear advantage for anyone interested in analysing water and effluent that has a high salt content, suspended solids, or particulates, and the most complex of organic compounds.

The certificate (MC160311/00) covers the ranges, 0-100, 0-500, 0-1000 and 0-10,000 mg/L of Total Organic Carbon. Utilising the automatic conversion function of the TOC-4200 to determine COD values.

Support for New Means of Communications, Enhanced Data Handling

Compatible with digital bus standard

• Instrument operation, readout of measured values, and checking for alarms can be performed via the RS-485 or RS-232C (option). This function is convenient when managing multiple instruments.

Control sample measurements

• Periodic measurements of pre-selected control samples. This can be used to monitor the condition of the instrument. Automatic calibration can be performed when a certain reference value is exceeded.

Web-based monitoring (option)

• Installing an optional board allows connection of the instrument to a network. The optional board offers web-server functions, allowing real-time browsing of measured values and alarms with a Web browser.

Support for a Wide Range of Samples

From pure water to heavily polluted water

• Measurement ranges from 5 mgC/L full-scale to 20,000 mgC/L full-scale.
  An option can be attached to support high-sensitivity measurements to 1 mgC/L full-scale.
• The pretreatment unit for heavily polluted water incorporates a unique washing function and special operation sequences to control blockages and biological contamination. This reduces the maintenance frequency.

Automatic dilution function

• TOC-4200 offers sample automatic dilution functions (×2 to ×50) as standard.
• When measuring an acid, strong alkaline, or inorganic salt sample that may damage the instrument or consumables, the effect can be alleviated by diluting the sample.
• A single high standard can be auto-diluted to make a multi-point calibration curve for laboratory time saving effort.

High-salt sample combustion tube kit

• When measuring samples with high levels of inorganic salt, such as seawater, the inorganic salt can accumulate inside the combustion tube and cause physical blockage or deterioration of the combustion tube. This kit extends the tube-replacement period approximately ten times as compared to a normal combustion tube.

Permits TOC measurements that match the sample’s characteristics

• TOC measurement by acidify and sparge TOC also know as non-purgeable organic carbon (NPOC)
• TOC determination by difference between total carbon (TC) and inorganic carbon (IC)
  TOC = TC – IC (requires option)
• TOC determination by addition method of NPOC and purgeable organic carbon (POC)
  TOC = NPOC + POC (requires option)

Range of pretreatment units to match a sample’s characteristics

• Pretreatment units are available for applications from pure water to heavily polluted water.
• Reduces instrument maintenance frequency.
• Switch between measurement points in up to six flow lines. More economical since the need for multiple instruments is eliminated

Reliable sample injection system

• A single unit performs sample intake, discharge, dilution and injection.
• Automated sample acidification and sparging.
• Highly reliable ceramic 8-port valve used to switch flow lines

Low Maintenance, Low Running Costs

Carrier gas purification function as standard

• A carrier gas purification function is installed as standard for 24-hour continuous operation by the analyzer. Purifying instrument air or compressor air in a facility to produce carrier gas significantly reduces running costs.

N₂ carrier set

• Compressed air is normally used as the carrier gas source but high-purity nitrogen gas can be used as the carrier gas as well. Convenient when a nitrogen gas centralized pipe is available in a facility (optional).

Water pump control functions

• Pumps sample only when necessary to save pumping energy and reduce maintenance.
• Accommodates low flow rates and restricted sampling timing.

Notification of replacement periods

• When the time to replace a consumable approaches, a pop-up window notifies the operator and gives instructions.
• Combining the contact outputs and other warning outputs simplifies consumables management.

Advanced Operability

Color LCD touch screen

• Easy-to-view color LCD
• Easy touch screen operation
• Large buttons

Calendar

• The calendar simplifies scheduling for automatic calibration, instrument sleep function, control sample measurement, and catalyst regeneration (up to 14 weeks). Batch inputs can be made by specifying a day of the week.

Hot sample measurement

• Off-line sample measurements can be performed in the standby time periods, even during on-line operation.

Generous data storage capacity

• The instrument internal memory can store 20,000 measured values (equivalent to one year’s data at a 30-minute measuring cycle), 100 calibration values (equivalent to weekly automatic calibration over one year), and history of 100 alarms.
• Six calibration curves can be saved for each measurement type (TC, NPOC, IC*, POC*, and TN*) to simplify switching between operation conditions.
• USB port fitted as standard below the touch screen. Measured values and measurement conditions can be saved to USB memory. Measured results are saved as CSV files to simplify the management and processing of large quantities of data.
  *Optional

Demands for highly purified water and its quality control are getting stronger in many industries, such as pharmaceutical, medical device, food/beverage, chemical, precision machinery, and semiconductor.
Shimadzu’s eTOC has been designed to satisfy this demand.
It has very high sensitivity and low detection limits, reaching 0.1 µg/L, making it perfectly suitable for ultra-pure water measurement.
Technology, Usability and Reliability: the defining attributes of the ultra-small, high-value eTOC.

World’s first technology in the world’s smallest and lightest^*1 casing

World-first^*2 TOC analyzer using mercury-free excimer lamp

Excimer lamps emit high-energy 172 nm wavelength light by inducing a dielectric barrier discharge within a xenon gas. The eTOC is the first TOC analyzer in the world to use a mercury-free excimer lamp.
The eTOC also features new “Active-Path” technology for transferring energy from the lamp to the sample. It efficiently irradiates the sample inside the lamp with ultraviolet light to reliably oxidize organic matter.
This new Shimadzu technology achieves both high measurement performance and high environmental performance.

*1: According to August 2020 Shimadzu survey of TOC analyzers with a multicolor display screen
*2: According to August 2020 Shimadzu survey

Large indicator and display screen on a small cabinet

A smart user interface and the large touch-panel screen provide exceptional visibility and operability.
The indicator clearly shows the analyzer’s status, such as standby, measurement in progress, or active warning.
There is no need to squint at a small monochrome screen or go to a separately located monitor or controller to confirm data and perform operations.

Monitor view

Indicator

Trend view

Table view

Small, lightweight casing provides installation flexibility

The small and lightweight eTOC can be installed on a tabletop or mounted to a wall or pole using an optional bracket kit.
In either case, a sampler can be attached to the side to calibrate the analyzer onsite.
That offers the flexibility to choose the most convenient location for installation.

Easy-to-use and maintain design improves efficiency

One-year maintenance-free.^*1 Tool-free maintenance.

The simple configuration is designed to be maintenance-free for a year.^*2
The only parts that need to be replaced during regular maintenance are the excimer lamp and pump head.
Both parts can be accessed via the front door of the analyzer and easily removed or installed without any tools.

*1: It may vary depending on the sample properties and measurement conditions.
*2: When the measurement period is five minutes or more

Replacing the Lamp

Replacing the Pump

Onsite calibration/validation using a vial sampler
Conditioned standard solutions are also available

Using an optional vial sampler, the analyzer can be calibrated or validated at the operating site.
The sampler can hold four standard solutions for creating up to four-point calibration curves.
Conditioned standard solutions, which are suitable for calibration, validation, or system suitability test, are also available. 
The sampler and the conditioned solutions can make calibration and validation easier and more reliable.

TOC-1000e with Vial Sampler (Optional)

Conditioned Standard Solutions

Export data in an easily readable/usable format

The eTOC can output data to a USB flash drive in text (CSV) or PDF format.

■ Text File

Comma-separated values (CSV) or tab-delimited values. Readable with spreadsheet software.

■ Daily Report (PDF file)

Measurement results are listed in a table and shown in a trend graph.

■ Print Output

The eTOC can export values to a printer(optional).
For information about compatible printers,contact a Shimadzu representative.

■ External Input/Output

By using an external input/output kit (optional), measurement values can be exported as an analog output (4 to 20 mA) or a contact output to notify the user of measurement results, alarms or events.

View/Acquire data from a web browser through the network

By connecting eTOCs to a network, you can check results remotely from the web browser of a PC or tablet. No special software is required. Data can also be downloaded as a file.
Even if there are multiple analyzers in different locations, routine checking can be carried out from one place.

Reliability to support regulations

Measurement reliability supports regulatory compliance requirements

The UV oxidation-conductivity method enables highly sensitive measurements with a simple analyzer design.
The system achieves high sensitivity with a detection limit of 0.1 µg/L,, which is suitable for ultra-pure water quality control.
It is also compliant with the pharmacopoeia requirements of various countries, such as the USP and EP.

Internal structure and measurement principle

Stable and Accurate Data Measurement

24-Hour Continuous eTOC Measurement Data of Ultra-Pure Water
It shows that results are stable enough to check the quality of ultra-pure water around 5 µg/L TOC.

Security functionality for supporting data management

User authentication and access rights control

Users can be authenticated based on an ID and password.
User access rights are controlled according to four user levels: “Administrator”, “Main User”, “User”, or “Guest”.

Operation/Event log

All operations performed by operators, measurement value alarms, instrument errors, and other operating events are recorded.
Filters by “Category”, such as “Measurement Alarms” or “Instrument Errors”, can be applied for browsing the log history.
Descriptions and reasons for frequently performed operations can be registered in advance and then recalled later.

Integrated data management

A daily report summarizing measurement results from each day and an operation log can be exported daily to a LabSolutions database via a network.
Data from multiple eTOC analyzers and data from other analytical instruments can be managed centrally together.