TOC-Monitoring Device "uniTOC"

Bild uniTOC Überwachungsanlage

The uniTOC monitoring device monitors your pure or ultrapure water production Contamination with organic components by constantly measuring the content of total organic carbon (TOC) in the water monitored.

The uniTOC uses complete UV oxidation, in which the organic carbon compounds in the water are converted into a UV reactor using UV radiation oxidized. The oxidation process can be enhanced by additional dosing of reagents.

The NDIR sensor (non-dispersive infrared sensor) determines the concentration of total organic carbon (TOC) in the process water using infrared light and spectroscopic evaluation.


The uniTOC is available in online and offline configurations.

Offline Version & Autosampler

An offline configuration is available for the miniTOC. Thanks to the offline mode of the miniTOC pro, the system can also be expanded with an autosampler with 15 positions for 100 mL sample vessels.

Air filter unit

allows the use of compressed air instead of oxygen or nitrogen as strip gas; filters out the carbon dioxide contained in the air (approx. 0.04% CO2 share in the earth's atmosphere)

Heat exchanger

If the inlet temperature of the media is more than 50 °C, a heat exchanger is required.

Pressure reducer

If the inlet pressure of the media is more than 1.5 bar, a pressure reducer is required.

unidata software for additional PC

enables the user to evaluate the results on an external computer

Technical Specifications:
  1. Method & detection: UV oxidation & NDIR (increased oxidation; configurable with reagent)
  2. Sample flow rate: 20mL loop (low range), 5mL loop (high range)
  3. Period of measurement: 5 - 15 min
  4. Measuring range: 2 to 5000 ppb (low range), 15 ppb to 20000 ppb (high range)
  5. Detection Accuracy: ±3 ppb or 2% (whichever is greater)
  6. Ports: 2 for samples | 1 for reagent
  7. related standards: USP <643>, DIN 32645, EP 2.2.44, DIN EN 1484, 21 CFR Part 11*, IP 45
  8. Environmental parameters: relative humidity: 10 to 95%, temperature: 10 to 45 °C
  9. Interface ports: analog (4 - 20 mA)
  10. Dimensions: 400 x 300 x 600 mm
  11. Weight: 24 kg
  12. Power Connection: 110 - 230 V, 50 Hz, 70 - 105 Watt
Feed Water Requirements:
  1. Type of sample: water to ultrapure water
  2. Size of the particles in the sample: < 200 µm
  3. Inlet Pressure: < 1,5bar
  4. Sample Temperature: 10 - 50 °C
  5. compressed strip gas: air, oxygen, nitrogen (free of carbon dioxide)
  6. Inlet pressure of gas: nitrogen/oxygen: 1 to 1,5 bar | Air: 3,5 to 5 bar

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