SUEZ Water Technologies and Solutions

- Model M9 SEC - Sievers Portable TOC Analyzer



The Sievers M9 SEC is a modified Sievers M9 Portable TOC Analyzer designed to operate as a Dissolved Organic Carbon (DOC) detector attached to a High-Performance Liquid Chromatography (HPLC) Size Exclusion Chromatography (SEC) system. The M9 SEC is ideal for performing SEC of environmental and industrial waters, providing size information for both TOC and UV activity. The combination of UV and SEC-DOC analysis offers the most comprehensive look into the size distribution of organic compounds in a water sample.

Enhanced reliability and greater uptime in challenging applications
  • Enhanced signal to noise ratio for improved low-level detection
  • Improved rejection of potential interferences
  • Covered by factory warranty and service programs
  • Easily integrated with HPLC SEC to measure DOC along with UVA
  • Ability to convert the Sievers M9 SEC into a fully-functional TOC Analyzer
  • Source Water Characterization
  • Membrane Fouling Protection and Troubleshooting
  • DBP Formation Potential
  • Chemical Treatment and Optimization
  • Boiler Feed/ Condensate Return

Operating Specifications*

  • Sample Type Discrete Grab Sample from HPLC pumped through DOC detector. Detector operates in OL
  • turbo mode (taking a reading every 4 s) to capture all the data needed for each peak
  • Calibration DOC detector is calibrated with different concentrations of KHP. Molecular weight
  • standards, such as PEG or PSS, are used to calibration retention time to molecular weight
  • Analysis Time Depends on the pump and column, but typically 60-90 min for analyzing all molecular weights in a sample
  • Sample Temperature Depends on HPLC specification but for the detector 5-60°C (31-140°F)
  • Ambient Temperature 5-40°C (41-104°F)
  • Instrument Sample Flow Rate HPLC pumps through Detector at 1mL/min

Detector Specifications

  • Analysis Method An inorganic carbon remover (ICR) removes IC from the sample. The resulting
  • non-purgeable organic carbon (NPOC) or total carbon (TC) value on the instrument is
  • obtained via UV persulfate oxidation and membrane conductivity detection
  • Outputs 4-20 mA outputs* (3), alarm outputs (4), binary input (1), USB device port (1), USB host
  • ports (2); Modbus TCP/IP. *Value is in exporting the TC/NPOC value to the HPLC software
  • Display 7' WVGA 800x480 pixel, Color LCD w/touch-screen
  • Power 100 – 240 V~, 50 – 60 Hz, 100 VA
  • Dimensions H: 39.5 cm (15.4 in);
  • W: 22.9 cm (9.0 in);
  • D: 46.4 cm (18.3 in)
  • Weight 9.4 kg (20.8 lb.)
  • Enclosure Rating IP-21
  • Safety Certifications ETL CE

Recommended System Setup

  • HPLC Isocratic Pump At least a pump that can be run isocratically with no change in reagent gradient
  • SEC Column Recommended Tosoh Bioscience 44782 column
  • Injector Manual or autosampler
  • Vacuum Degasser To minimize interference from gases
  • UV Detector Multiple wavelength detector or diode array detector (DAD)
  • Universal Interface Box Analog to digital converter box for third party detectors
  • Sample Prep Filter to 0.45 μm and analyze DOC Detection to protect HPLC components
  • Chemistry Phosphate buffer (0.004 M, pH = 6.8) with 0.025 M sodium sulfate mobile phase (inorganic
  • in nature to avoid any organic contribution)
  • HPLC & HPLC Software To run system and collect data

Recommended Detector Environment

  • Maximum Relative Humidity 0-95% non-condensing
  • Maximum Altitude 3,000 m (9,800 ft.)
  • Pollution Degree 2

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