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  • Gas Chromatography

    Analysis of VOCs in drinking water, sulfur and fluorinated contaminants in petrochemicals, and pesticide residues on food products.

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  • Total Organic Carbon Analysis

    OI Analytical has been an innovator in instrumentation for Total Organic Carbon analysis (TOC) since 1972.

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  • Automated Chemistry Analyzers

    Improve laboratory productivity by automating wet chemistry procedures.

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OI Analytical designs and manufactures instrumentation for chemical analysis. Data from our analytical instruments serve as the basis for informed decisions affecting human health and safety, environmental protection, industrial operations, and product quality.

Industries & Applications

Agronomy & Soil Science

Agronomy & Soil Science

Concurrently test individual samples for multiple analytes (ions, nutrient pollutants, or compounds) to improve laboratory workflow and sample turnaround time. Colorimetric reaction chemistries and analyses are conducted in disposable cuvettes using microliter amounts of sample and reagents. The ability to test samples for multiple analytes in a single run is useful in applications such as bioethanol research, soil science, and agronomy.

Chemicals & Petrochemicals

Chemicals & Petrochemicals

OI Analytical tandem GC detectors combine a photoionization detector (PID) with a flame ionization detector (FID) or second selective detector such as an ELCD or XSD providing two simultaneous chromatograms from a single run. The PID selectively responds to aromatic and unsaturated hydrocarbons in the presence of alkanes and saturated hydrocarbons. The second detector is used to further differentiate and identify compounds with specific heteroatoms.

About OI Analytical

About OI Analytical

The company was first organized in 1963 and entered the analytical instrument business in 1969. On October 31, 2011 OI Analytical became a Xylem brand and operates as part of the Xylem Analytics business unit.

OI Analytical is located in College Station, Texas. A second facility producing GC-based air monitoring systems and mass spectrometry instruments is based in Birmingham, Alabama.

OI Analytical is an ISO-9001 certified organization that operates under a Quality Management System (QMS) to continuously improve the quality of our products, services, and business processes.

Our Vision

Our company vision is Opportunity through Innovation®. We strive to provide innovative products and services that enable our customers to pursue new opportunities and tackle challenging problems in diverse fields of science and industry.

For more information and a full product catalog, please visit

Contact Us


OI Analytical
151 Graham Road
College Station, TX 77845

Phone & Email

US & Canada: (979) 690-1711

Main Number: (979) 690-1711

International Sales: