Engineering360 has asked its users about the latest design trends and features related to Total Organic Carbon (TOC) Analyzers. They have also shared their product applications and tips on how to buy and use these products.
See the entire survey

What are some of the applications you have used TOC analyzers for?
32 answers
TOC analyzers have been installed both in the laboratory (commercial, municipal, R&D and for Regulatory Authorities) as well as for continuous on-line measurement through-out industry. Since our UV persulfate technique is truly continuous, the instrumentation can be used for many monitoring and control applications. In the first instance, these instruments are often installed as compliance monitors, measuring the quality of the treated water discharged to either river or sewer. However, progressively the technology is installed in-process to identify product loss, spillage and to control dosing chemicals. The food and beverage industry, engineering, chemical and the international/MOD airports, use TOC analyzers to determine the organic contamination within their waste-water and surface water discharges. With a speed of response from 3 minutes, the instrumentation is a very effective proactive management tool, identifying point source emissions and failing processes in real time. This style of monitoring and control can then be used to identify detrimental events and allow engineers to take corrective measures before the problems compound themselves. By comparison, discrete laboratory analysis can only provide historical data making proactive management difficult. Whilst spot sampling can be useful to initially indicate the extent of a problem or enable independent measurement, laboratory analysis is often less effective than continuous measurement. A single sample may not capture the true concentration range eg. highs and lows, whilst composite sampling also often masks the extent of the problem by balancing sample concentrations.
~Steven T, Engineer, Borough Green, Kent, UK
1.To replace the Potassium bichromate method(Taiwan EPA) 2.For oil leakage monitor 3.For waste water effluent standard control 4.For process waste water(Influent of waste water plant) control 5.For water recycling monitor
~Canny Chuang, Marketing/Sales, Taichung, Taiwan
TOC Analyzers are used by the City of Winnipeg (Manitoba, Canada) to monitor both our Water Supply and the various streams in our three Waste Water Treatment Plants.
~Allan Z, Wastewater Treatment Process Specialist (Chemist), Winnipeg, Canada
We're using them during our drilling operations. That's the fastest measurement to determine if we have found oil, hydrocarbonic gases or toxic gases.
~Bauduin Julian, Process Engineer, Roanne, France
Ultra pure water analysis, water for injection (WFI) analysis, semiconductor cleaning water analysis, industrial waste water analysis
~Steve S, Marketing/Sales, Denver, CO
- Pharmaceutical grade water samples. - Environmental samples (industrial effluent, drinking water) - Feed water for power plant
~Sohail Shahzad, Technical Support, Islamabad, Pakistan
All applications which are mainly pertinent in the Middle East industry; from Pharma to Petrochemical applications...
~Technical Support/Services, Dubai, United Arab Emirates
In pharmaceutical area (cleaning validation) and water for injectables.
~Jimmy Gramusset, Quality Control, Santigo, Chile
Ultra purity water in the semiconductor and electronic industries.
~Engineering, Consulting, Muntinlupa, Philippines
PW WFI UPW Return condensate Validation and qualification
~Roger S, Application Manager Pharma & UPW, Hinwil, Switzerland
Cooling Water Tower, Process Sump recovery Pit, Biotreater.
~Eno A, Analyzer Support Tech, Geismar, LA
We also want to distinguish organic carbon in emissions.
~Torres Jaramillo Jorge Alejandro, Research & Development, Puebla, Puebla., Mexico
Drinking water, Waste water, Leachates from Landfills.
~Ismail H, Laboratory Analyst, Cape Town, South Africa
For raw water is Water & Waste water treatment plant.
~Roberto F, Engineering Consultant, Sao Paulo, Brasil
Mainly WFI and PW release to USP643 and EP2.9.
~Marketing/Sales, Dublin, Ireland
Measurement of water contamination in Hamburg.
~Engineering, Consulting, Toulouse, France
Environment, WFI, CIP Cleaning and validation.
~Engineering, Consulting, Delhi, India
For waste water and drinking water analysis.
~Marketing/Sales, Shah Alam, Malaysia
Industrial waste water with high salinity.
~Project Management, Haifa, Israel
Waste water monitoring and condensates.
~Engineering, Design, Porto, Portugal
Surface, drinking and waste waters.
~Quality Control, Epalinges, Switzerland
Factory water monitoring system
~Kaz K, General Management, Tokyo, Japan
Hi-Purity water and Waste water
~Marketing/Sales, Makati City, Philippines
Looking at the TOC in our UPW.
~Manuel C, UPW/WWT Tech, Castleton, NY
TOC in various water matrices.
~Technical Support/Services, Pymble, Australia
Analysis of purified water
~Engineering, Process/Production, East London, South Africa
Clean water analysis
~Mark H, General Management, Boulder, CO
Process water, WFI
~Quality Control/Assurance, East Brunswick, NJ
Water, Waste water
~Ragesh S, Analytical Chemist, Yanbu, Saudi Arabia
Purified water
~Engineering, Process/Production, Kalundborg, Denmark
Pure water
~Research & Development, HIGH WYCOMBE, United Kingdom
~Marketing/Sales, Boulder, CO

Please share with us any “non-standard” applications that TOC analyzers have been used for.
6 answers
TOC as an on-line parameter is progressively being used to infer other measurements such as Biological and Chemical Oxygen Demand. The ability to respond to events as they occur allows real time control and risk aversion. Whilst the methodology is very established in certain industries, in others it is only used in isolated cases. Probably the most unusual application which we have installed the Protoc technology is to measure the quality of discharge from a Company making snake anti-venom, following electro-chemical treatment, this application has never been repeated! A slightly less unusual example but still niche, would be raw water abstraction for potable or drinking water production. Since the technique is capable of reporting all forms of organic contamination (which would include petrol, diesel, solvents, agrichemical compounds) the measurement is a very comprehensive pollution alarm mechanism. Similarly, whilst TOC measurement has also been widely installed to measure surface water discharge from drainage systems at airports and large chemical manufacturers; the measurement of surface water release from large construction sites, building domestic housing would also be considered unusual. However, its deployment along with a suite of other measurements, has proved beneficial to identify water quality and provide controlled release from site.
~Steven T, Engineer, Borough Green, Kent, UK
We use TOC analyzers more than the chromatograph to determine acetylene test because the peak is so short that a chromatograph could miss the maximum.
~Bauduin Julian, Process Engineer, Roanne, France
Industrial Waste and Hauled Waste monitoring for organic content. Biosolids carbon content.
~Allan Z, Wastewater Treatment Process Specialist (Chemist), Winnipeg, Canada
Return condensate or mobile inspection.
~Roger S, Application Manager Pharma & UPW, Hinwil, Switzerland
Analysis of Total Nitrogen.
~Ismail H, Laboratory Analyst, Cape Town, South Africa
Environmental VOC control
~Jimmy Gramusset, Quality Control, Santigo, Chile

Do you know of any disastrous mistakes that occurred due to the incorrect usage of TOC analyzers?
9 answers
Certainly optical instruments have been wrongly selected for monitoring and control applications. An instrument using UV254nm absorption was purchased for a coagulation control application only to find that the organic components (humic and formic acids) were not detected. Similarly, surrogate TOC analysis was unable to report dissolved sugar components in a brewing waste application.
~Steven T, Engineer, Borough Green, Kent, UK
The TOC is the high loading device for the end user, if your people are not professionals in the operation, please make the contract with the supplier. If you don't have the budget for this, please consider that the machine will be non functioning soon without maintenance, according to my 12 years of experience.
~Canny Chuang, Marketing/Sales, Taichung, Taiwan
Particle size is important for a sample to analyze, if a sample's particle size is more than the recommended size for that instrument, then it creates a major problem for the instrument and it will give a wrong analysis and need lot of effort to rectify it.
~Ragesh S, Analytical Chemist, Yanbu, Saudi Arabia
Not really. We use TOC analyzers because it is rare when they have been poisoned. Only physical problems occur. The only one possibility for me is to switch off a TOC analyzer when hydrocarbons and humidity go through.
~Bauduin Julian, Process Engineer, Roanne, France
We analyzed a leachate sample on our old analyzer and it never worked again and had to be condemned.
~Ismail H, Laboratory Analyst, Cape Town, South Africa
Room temperatures, okay in a lab but not so in a mechanical space.
~Mark H, General Management, Boulder, CO
Use concentrated hydrochloric acid, and damage the sensor.
~Jimmy Gramusset, Quality Control, Santigo, Chile
Wrong results, failed validation, unsatisfied customers
~Roger S, Application Manager Pharma & UPW, Hinwil, Switzerland
Sampling of high TOC range samples.....having matrix.
~Sohail Shahzad, Technical Support, Islamabad, Pakistan


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