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The CFA technique of segmented flow analysis (SFA) uses turbulent flow conditions that allow for complete sample dispersion. In contrast to CFA, discrete analyzers keep samples separate throughout the testing process, dispensing precise amounts when required.
In continuous flow analysis (CFA), a sample is injected into a flowing carrier solution passing rapidly through small-bore tubing. The sample is mixed with a reagent, which reacts with the sample to develop a color and determine the sample concentration. The use of carefully controlled flow conditions ensures that the color development reaction is reproducible and the color measurement need not wait until the reaction has gone to completion.
The CFA and discrete analyzer market by industry
The CFA technique of segmented flow analysis (SFA) uses turbulent flow conditions that allow for complete sample dispersion. Other techniques include flow injected analysis (FIA) and sequential injection analysis, which uses laminar flow existing in the narrow-bore tubing to mix with the reagent to eliminate the need for air bubble partitioning.
In contrast to CFA, discrete analyzers keep samples separate throughout the testing process, dispensing precise amounts when required. Rotating individual cuvettes through the instrument instead of releasing the sample in a continuous stream cuts down on reagent waste and can produce hundreds of results per hour.CFA and discrete analyzers are used in environmental applications for measuring analytes such as ammonia, chloride, nitrite, and phosphate. The systems are also used in food and beverage analysis, chemical testing, and pharmaceutical analysis. Although CFA is a well-established technique for industrial applications, the prospect of cutting testing and consumable costs, and the ease of operation have prompted many laboratories to transfer methods from CFA to discrete analyzers.
Currently, the US and Europe account for about nearly three-fourths of the worldwide market for CFA and discrete analyzers. Although the Latin America and Asia Pacific markets are comparatively smaller for CFA and discrete analyzers, these regions continue to expand rapidly and offer solid growth opportunities. Environmental applications are estimated to account for nearly a third of the overall demand driven by wastewater and drinking water analysis. Agriculture and food and beverage is also a significant market with more than one-fourth of the market share. Other industries using the technology include contract research organizations (CROs), pharmaceutical, government testing, utilities, biotechnology, and others.
The foregoing data were extracted and adapted from SDi's Global Assessment Report, 11 Edition. For more information, contact Glenn Cudiamat, VP of Research Services, Strategic Directions International, Inc., 6242 Westchester Parkway, Suite 100, Los Angeles, CA 90045, (310) 641-4982, fax: (310) 641-8851, email: firstname.lastname@example.org