Automatic TOC Analyzer TOC-106

The TOC-106 is a space-saving, multi-stream measurement whichi quickly and accurately measures the total organic carbon content of water from rivers, lakes, marshes, sea areas, factory wastewater and other sources, in either online or offline mode.
This system employs Toray Engineering's unique low-temperature sealed combustion system to ensure long-term, stable measurement. It is designed for economy based on the track record of the previous TOC-610, 620 and 100 models, and is the on-site direct-connection type featuring ease-of-operation, compactness and a multi-stream switching function.


  1. Low price.
  2. Saves space and is simple to operate.
  3. Measurement range: 0-100-1000 mg/l
    0-50-300 mg/l(Option)
    0-300-3000 mg/l(Option)
  4. 650 °C low-temperature sealed combustion and automatic washing enable stable measurement of seawater samples (optional).
  5. Up to a maximum of 6 streams (optional) can be selected and measured.
  6. Can handle all types of sample water using various pre-treatment units available as options.
  7. The offline TOC measurement function is standard equipment.

Principle of Measurement

After removing inorganic carbon from the sample water in an aeration cylinder, and measuring it in the measuring section, the sample is injected into a reaction tube equipped with catalyst, and converted to carbon dioxide through sealed combustion oxidation. Concentration of the converted carbon dioxide is measured with an infrared analyzer, and the TOC value is obtained from a calibration curve for carbon dioxide and TOC stored beforehand in the signal processing unit.


Equipment specifications

Measurement range 0-100-1000 mg/l (Freely variable)
0-50-300 mg/l(Option)
0-300-3000 mg/l(Option)
Dilution function
Stream switching function Max. 6 streams (Option) *3
Measurement cycle From 4 min (Offline TC measurement)
From 5 min (Online TOC measurement)
Measurement method Inorganic carbon removal: Automatic intermittent HCl acidic air aeration method
Total carbon measurement: Automatic intermittent sealed combustion infrared analysis method
Calibration method Span calibration: Manual and automatic calibration (Option)
Zero calibration: Manual (With auto zero function)
Conversion function Conversion from TOC value to COD value and display
Washing Automatic washing of injection tube and combustion section; Alternate injection of sample and washing liquid (Washing liquid contained in the unit)
Range setting Manual switching
Construction Standalone console, with casters
Dimensions 520W × 450D × 1335H mm
Weight Approx. 110 kg


Standard liquid Potassium hydrogen phthalate aqueous solution
Repeatability Within ±2% of full scale *2
Zero stability Within ±2% of full scale/day *2
Span stability Within ±2% of full scale/day *2
Ambient temperature variation Within ±2% of full scale/5°C *2

Engineering specifications

Measurement value output External output: DC4-20mA
Error alarm indication LED display, Closed contact output in case of error (AC125V, 1A)
Alarms Heater temperature control
Upper/Lower limits for measured value
No sample
Out of carrier gas (Option)
Out of reagent (Option)
Out of washing water (Option)
Sample conditions Online measurement: 0.02-0.1 MPa, 500 ml/min or higher
Offline measurement: Normal pressure, 200-500 ml/3 times
Reagents / Utilities Washing liquid: Distilled water
Reagents: HCl 2 mol/l, 2.0 l/month
Carrier gas: Nitrogen gas or purified air *1
Pressure 0.3 MPa
Consumption 7 Nm³/month
Power AC100V±10V 50/60Hz Approx. 600VA
Set up conditions Indoors
3-40 °C during operation (Temperature gradient 10 °C /hour or less)
45%-85%RH (No condensation)

Specifications are subject to change due to product improvements.
*1 The carrier gas can be changed to air specifications. However, please consult with the sales supervisor when making that change.
*2 Not applicable for the optional range.
*3 For details, please contact the sales supervisor.

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