A total organic carbon analyzer (also referred to as TOC analyzers) measures the amount of total organic carbon present in a liquid or water sample. TOC detection is important because of the effects that TOCs may have on health, not to mention the environmental effects and implications for the pharmaceutical manufacturing processes. Since all total organic carbon analyzers only measure total carbon, a TOC analyzer always requires some accounting for the inorganic carbon (IC) that is always present.
TOC analyzers, including a portable TOC analyzer, utilize the same basic technique where acid is added to the liquid sample to remove IC. At this point, the IC is converted into carbon dioxide gas. It is then stripped out of the liquid by a carrier gas where the remaining inorganic carbon-free sample is then oxidized and the carbon dioxide generated from the oxidation process is directly related to the TOC total organic carbon in the sample. There are several methods for introducing the sample to TOC analyzers, including using a syringe, autosampler, and loop sampling. An important specification for total organic carbon analyzers is the measuring range. Carrier gas flow rate, average analysis time and process temperature are important as well for total organic carbon analysis.
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Analytik Jena
- TC, TOC, TIC, EC and BOC
- High-temperature combustion
- 0 – 100 % C at 0.5 g sample or 500 mg C absolute
0 – 20 % S at 75 mg sample or 15 mg S absolute
0 – 10 % Cl at 100 mg sample or 10 mg Cl absolute - Carbon - 3 ppm at 3 g sample weight or 10 µg C abs | Sulfur - 3 ppm at 3 g sample weight or 10 µg S abs. | Chlorine - 0.3 ppm at 3 g sample
weight or 1 µg Cl abs.
- C/S determination (simultaneous or separate): at least 3 minutes,
Cl determination: 3 - 10 minutes
Analytik Jena
- TOC, EOX or AOX/TOX
- Combustion
- Carbon - 100 wt-% (organics) 10,000 mg/L (water), Nitrogen - 10,000 mg/L, Sulfur - 40,000 mg/L, Chlorine - 100,000 mg/L
- Carbon - 100 µg/L (organics) 200 µg/L (water), Nitrogen - 10 µg/L, Sulfur - 5 µg/L, Sulfur - 600 µg/L, Chlorine - 50 µg/L (“high sensitive”)
- Approx. 3 – 5 min (V) C/N/S, 3 – 8 min C/N/S (H) and Cl (V/H)
Analytik Jena
- TC, TIC, TOC, NPOC, POC, and TNb
- High temperature combustion / Wet chemical oxidation by UV radiation (254 nm+185 nm) /persulfate dependent on instrument configuration
- 0–30,000 mg/L C
- 1 µg/L C - 50 µg/L C dependent on instrument configuration
- Approx. 3–5 min for each parameter
Analytik Jena
- Microcoulometry, NDIR, for AOX, EOX, POX, TOC, TX/TOX
- Combustion
- AOX/ EOX/ POX/ TX/ TOX determination - up to 1,000 µg Cl absolute
TOC determination - up to 10,000 mg/l TOC - AOX/ EOX/ POX/ TX/ TOX determination - 10 ng Cl absolute
TOC determination - 0.2 mg/l - AOX/EOX/TX: approx. 8 - 10 min depending on concentration and application
TOC: approx. 3 - 5 min depending on concentration and application
Elementar Americas
- TOC, NPOC, TC, TIC, POC, DOC, TNb*
*optionally available
- High-temperature combustion
- Inquire
- Inquire
- Inquire
Elementar Americas
- CHNS, CHN, CNS, CN, O*, Cl*
*optionally available - High-temperature combustion
- Large dynamic concentration range:
C: Up to 14 mg absolute or 0 - 100 % (0 - 50 mg in CN mode*)
H: Up to 2 mg absolute or 0 - 100 %
N: Up to 10 mg absolute or 0 - 100 %
S: Up to 3 mg absolute or 0 - 100 %
O*: Up to 6 mg absolute or 0 - 100 %
Cl*: Up to 1.2 mg absolute or 0 - 100 %
*optionally available - Inquire
- ≥ 7 min for simultaneous CHNS determination, depending on sample type, analysis mode, and configuration.
Elementar Americas
- CHNS, CNS, CHN, CN, N, S, O, Cl, TIC
- High temperature combustion
- C: up to 100 mg (up to 150 mg*) absolute, from 0 - 100 %
H: up to 15 mg absolute, from 0 - 100 %
N: up to 100 mg absolute, from 0 -100 %
S: up to 18 mg absolute, from 0 - 100 %
O*: up to 6 mg absolute, from 0 - 100 %
Cl*: up to 1.2 mg absolute, from 0 - 100 % - Inquire
- ~3/4 min per element
Elementar Americas
- TOC
- High temperature combustion
- Inquire
- Inquire
- Inquire
ELTRA GmbH
- Carbon, Hydrogen, Sulfur
- Thermal Combustion
- 0.005 – 100 %
- Inquire
- 60 - 180 s
ELTRA GmbH
- Carbon, Hydrogen, Sulfur
- Thermal Combustion
- 25 to 500 mg (carbon), 10 to 100 mg (sulfur)
- Inquire
- 60 - 180 s
ELTRA GmbH
- Sulfur, Carbon
- Thermal Combustion
- 25 to 500 mg (carbon), 10 to 100 mg (sulfur)
- 5 ug (carbon), 1 ug (sulfur)
- 60 to 120 s
Shimadzu
- TOC, conductivity (or specific resistance), and temperature
- TOC: 0 to 2000 µg/L; Conductivity: 0.023 to 206 µS/cm (without temperature correction)
- TOC: 0.1 µg/L
- Inquire
Shimadzu
- TC, NPOC, IC-POC M, TN
- Combustion Oxidation / Non-Dispersive Infrared Gas Detection
- 5 to 20,000 mgC/L
- Inquire
- 4 min
Shimadzu
- TC, IC, TOC and NPOC;
(POC, TOC via POC + NPOC and TN : Optional) - Combustion Catalytic Oxidation Method
(Non-Dispersive Infrared detection Method) - TC: 0 to 30,000 mg/L, IC: 0 to 35,000 mg/L
- 4 or 50 ug/L (TC)
- 3 or 4 min
Shimadzu
- TC, IC, TOC, NPOC
- Wet Chemical (Heat-UV-Persulfate)
- TC: 0-3,500 mg/L, IC: 0-3,500 mg/L
- 0.5 µg/L
- ~ 4 minutes
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