On-line TOC, BORON Analyzers

M5310 Series TOC Analyzers

Sievers M5310 C Portable Total Organic Carbon (TOC) Analyzer


The Sievers M5310 C Portable Total Organic Carbon (TOC) Analyzer is the most versatile of the M TOC Analyzer Series, offering maximum flexibility for how and where it is used. Weighing just 9.8 kg (21.6 lbs), it's lightweight, compact design makes it a powerful troubleshooting analysis tool that can be installed online for continuous measurement or carried to any location in the water system.

The M5310 C Portable is engineered for ease of use and cost-effective operation, allowing it to be used for single grab samples, autosampler mode, or in a process stream for continuous on-line TOC measurement.

An unequalled level of efficiency and flexibility

  • 50% faster TOC analysis over legacy 5310 C Analyzers, providing readings in only two minutes
  • Automated operations (calibration, verification, and data analysis) and Autoreagent feature enable unattended operation.
  • Saved methods are now available at the instrument.

Easy to use and cost-effective

  • Streamlined protocols
  • Intelligent diagnostics with more informative error and alert messages and fast-links for independent troubleshooting
  • The M5310 C Analyzer’s database structure allows more useful ways to arrange, search and query data.
  • There is no need for external reagents or gas supplies.
  • The M5310 C requires only a few hours of preventive maintenance per year, and calibration is stable for 12 months.
  • It's large, color, touch-screen display provides intuitive menus.

Unique TOC technology

The M5310 C Analyzer recovers difficult-to-oxidize organic compounds, such as humic acid, by combining UV/persulfate oxidation with the proven Membrane Conductometric Detection Technology, a US EPA-approved methodology under Standard Methods 5310 C and USEPA Method 415.3. Supporting Disinfectants and Disinfection Byproducts Rule (DBPR) compliance, the M5310 C automatically calculates percent TOC removal for influent and effluent streams or samples.

Now with integrated Inorganic Carbon Remover

The Inorganic Carbon Remover (ICR) feature is now integrated inside the Analyzer. Available in all three models, ICR enables more accurate TOC results by reducing inorganic carbon (IC) levels in sample streams with high IC/TOC ratios.

Advanced productivity and efficieincy

  • Two-minute analysis time
  • Automated operations, such as calibration and data analysis
  • Autoreagent feature automatically establishes optimal flow rates for each sample

Low Maintenance and Operating Costs

  • No external reagent or gas supplies are required, saving valuable lab space, time, and money.
  • Internal reagent packs that can be installed in minutes to achieve three to six months of uninterrupted service, depending on the application.
  • The M5310 C Series Analyzers typically require just a few hours per year of preventive maintenance.
  • It's modular design facilitates quick consumables replacement and preventive maintenance.

12-month calibration stability

The M5310 C Laboratory Analyzer offers 12-month calibration stability, unlike competing analyzers that require weekly or even daily calibration. Users can select from a variety of single- and multi-point calibration routines. To further simplify operation, calibration calculations are performed and constants updated automatically.

Simple and intuitive use

  • Large, color, touch-screen display
  • Saved methods available at the instrument
  • At-a-glance consumables expenditure evaluation
  • Trend data displays in tabular or graphical form

Expanded Data Access

The M5310 C Laboratory TOC Analyzer uses a standard PC connection (USB port or Ethernet connectivity via serial, parallel port) to open data files directly into Microsoft® Excel® without the need to convert data with proprietary software.


Self-contained in ruggesd dust- and spray-resistant enclosure, the M5310 C combines innovative design improvements with carefully selected materials and components to ensure maximum uptime.

Operating Specifications*
Range 4 ppb to 50 ppm
Precision < 1% RSD
Accuracy ± 2% or ± 0.5 ppb, whichever is greater
Display Readout 3 significant digits
Sample Type On-line continuous, Autosampler, or discrete grab sample, timed on-line, TOC removal on-line, TOC removal grab
Calibration Typically stable for 12 months
Analysis Time 2 minutes
Sample Temperature** 5–95 °C (41–203 °F)
Ambient Temperature 5–40 °C (41–104 °F)
Sample Pressure 100 psig
Required Sample Line Flow Rate >50 mL/min (for on-line mode)
Instrument Sample
Flow Rate
0.5 mL/min
Analyzer Specifications
On-Line Inlet(s) One stream
Outputs 4-20 mA output (3); alarm outputs (4); binary input (1); USB device port (1); USB host ports (2); Ethernet
Display  7" WVGA, Color LCD with touch-screen
Power 100 – 240 V~, 50 - 60 Hz, 100 VA
Fuses Replace with same type and size fuse: T 1.6 A 250 VAC Fuse (Slow Blow), size 5 X 20 mm appliance inlet
Dimensions H: 39.5 cm (15.4 in); W: 22.9 cm (9.0 in); D: 46.4 cm (18.3 in)
Weight 9.8 kg (21.6 lb)
Safety Certifications ETL, CE see Declaration of Conformity
Enclosure Rating IP-21
Maximum Relative Humidity 0 - 95%, non-condensing
Maximum Altitude 3,000 m (9.800 ft)
Pollution Degree 2


*Stated analytical performance is achievable under controlled laboratory conditions that minimize operator and standards errors.
**Sample temperature above 60 °C requires optional PVDF iOS.

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