Water Quality AnalyzersHigh Sensitivity TOC Automatic Analyzer (for ultrapure water)
TOC-780 water quality analyzer
The TOC-780 is a high-sensitivity, automatic TOC analyzer which quickly and accurately measures the total organic carbon content of pure water and water from rivers and other sources, in either online or offline mode.
The TOC-780 achieves superior usability and space savings, based on the previous TOC-700 Series which achieved high-speed response (90% response within five minutes) with continuous measurement system developed by Toray's technology.
- TOC absolute values can be measured using system blank analysis and dilution water correction for calibration liquid.
- The auto zero and automatic diagnosis functions enable stable measurement over the long-term.
- The system employs a wet UV oxidation/CO2 detection system for continuous measurement and high-speed response.
- Applicable to a wide range of samples, from pure water to river water.
- Water quality management for pure water used in semiconductor manufacturing
- Water supply, drug manufacture, food, and chemical engineering water quality management
- Steam drain and other process management
- Other general pure water quality management
To calculate total organic carbon, firstly, after inorganic carbon is removed from sample water using an IC scrubber, organic carbon is efficiently oxidized and converted to carbon dioxide by adding an oxidant and irradiating with powerful UV rays in a UV reactor. secondly, concentration of the converted carbon dioxide is measured by an infrared analyzer to get the TOC calibration curve, then comparing with the carbon dioxide gas concentration, registered in advance in the data processing unit.
|Measurement range||TOC-780H|| 0-1/0 - 10mg/l
0-5/0 - 50mg/l*1
0-10/0 - 100mg/l*1
|TOC-780L||0-100/0 - 500μg/l|
|Stream switching function||－|
|Measurement cycle||Automatic continuous measurement|
|Measurement method||Inorganic carbon removal||Automatic continuous acidic aeration method|
|Total carbon measurement||Automatic continuous low-temperature wet UV oxidation - infrared analysis method|
|Calibration method||Span calibration||Manual|
|Zero calibration||Manual and automatic calibration|
|Range setting||Manual setting, remote setting, and automatic switching|
|Type||Standalone cubicle panel, with casters|
|Dimensions||602 mm (W) × 400 mm (D) × 1,300 mm (H)|
|Weight||Approx. 140 kg|
|Standard liquid||Potassium hydrogen phthalate aqueous solution|
|Repeatability||Within ±2% of full scale|
|Zero stability||Within ±2% of full scale/day|
|Span stability||Within ±2% of full scale/day|
|Ambient temperature change||Within ±2% of full scale/5°C|
|Measurement value output||External output||DC4～20mA
|Range ID signal non-voltage contact||AC125V, 2A|
|Error alarm indication||LED display, closed contact output in case of error (AC 125 V, 2 A)|
|Alarms||Measurement value upper/lower limits
Out of carrier gas (optional)
No sample (optional)
Out of test reagent (optional)
|Sample conditions||Online measurement||0.02 to 0.3 MPa, 30 ml/min or higher
|Offline measurement||Normal pressure, 500 to 1,000 ml/3 measurements|
|Test reagents/utilities||Test reagent|| Phosphoric acid solution 20～25l/month
Sodium persulfate solution 20～25l/month *2
|Carrier gas||Nitrogen gas, Pressure 0.2～0.7MPa
Consumption 60 - 78 Nm3/month
|Power||AC100V±10V 50/60Hz Approx. 500VA|
Indoors 0 to 40°C during operation (temperature gradient of 10°C/hour or less)
45% to 85% RH (with no condensation)
Specifications are subject to change in order to make product improvements.
- 1 Available as an option
- 2 Used only with TOC-780H
- CONTACT US
East Japan : +81-3-5962-9775
West Japan : +81-77-544-6224