OI Analytical - a xylem brand  

1080 TOC Analyzer

The 1080 TOC Analyzer processes aqueous samples for analysis of the total organic carbon (TOC), total inorganic carbon (TIC), and non-purgeable organic carbon (NPOC) content. 

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The 1080 TOC Analyzer processes aqueous samples for analysis of the total organic carbon (TOC), total inorganic carbon (TIC), and non-purgeable organic carbon (NPOC) content. Supporting USEPA-approved methods, Standard Methods, ASTM, DIN/ISO/CEN, and EU Methods the 1080 can analyze up to 300 samples per 24-hour period, depending upon the protocol employed, in excess of 100,000 samples per year. Principal applications include: wastewater, seawater, industrial process water, drinking water, groundwater and cooling water.

The 1080 TOC employs a multi-step analysis technique to distinguish and quantify different forms of carbon present in sample matrices and determine TOC content. The value reported as TOC is the non-purgeable organic carbon (NPOC) content. NPOC is derived by first determining, or sparging, the TIC content of a sample and then introducing the TIC-free sample into the combustion reactor to oxidize organic compound constituents.

TIC concentration is determined by acidifying a sample to a pH less than 2. Carbonates and bicarbonates in the sample dissociate, forming CO2, which is measured by a solid state non-dispersive infrared detector (SSNDIR) and reported in mass and concentration values.

TIC-free samples are Pulse-Timed injected into the reactor to perform high temperature (680 ºC) combustion over a platinum catalyst. Organic compounds are oxidized and converted into CO2, which is then quantified by the SSNDIR detector. The result is reported as the TOC content in both mass and concentration of carbon.

The 1080 TOC also supports other analytical approaches — including TC, TOC by subtraction (TC-TIC), and simultaneous determination of total bound nitrogen (TNb) using the optional TNb analysis module.


Model 1080 Features:

  • Wide operational range (50 ppb –2,000 ppm C)
  • Supports TC/TIC/TOC/NPOC analysis techniques and standard measurements
  • Patented* Smart Slide injector extends o-ring life and reduces maintenance
  • Patented* Tube Guard extends furnace tube life, and reduces maintenance
Method Compliance USEPA, CEN, USP, EUP, ASTM, ISO, DIN, STD
Furnace Temperature Adjustable, 680 ˚C in 1˚C increments - 720 ˚C for TNb
Measurement Range

50 ppb C - 2,000 ppm C
(multiple calibration ranges or dilution required)

Measuring time From 3 minutes
Oxidation technique High temperature catalytic oxidation, liquid samples
Options available TNb module, 88-position rotary autosampler
Method TC 680 ˚C with Platinum catalyst
Method TIC Acidification and sparging
Method TOC NPOC, combustion of TIC-free sample, TOC–TIC
Reproducibility 3.0%
Accuracy +2% FS or 2% relative
Sample pathway Color-coded Teflon® and PEEK® with automatic cleaning
in all injection modes
Sample injection and sample handling

Injection: sipper, rotary autosampler
Handling: automatic syringe with sliding TC
furnace injector

Sample Injection Volume 10µL – 2.0 mL
IC pretreatment Available with optional autosampler
Reagent purge Yes
Reagents Required Hydrochloric acid, rinse water
Gas Supply

Oxygen or Air, 99.995% (carbon dioxide and
hydrocarbon free), 50-60 psig

Warranty 12 months on parts and labor