L-K Industries
Sales Helpline(713) 926-2623
24 HR Tech Helpline(832) 588-6369
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Petroleum Testing Equipment Suppliers Worldwide Since 1930

L-K Industries is a leading U.S. manufacturer of oil centrifuges and related petroleum sampling and measuring equipment for the crude oil/petroleum, petrochemical, hydrocarbon, agriculture, food processing and medical industries. Our most common equipment includes portable and laboratory oil centrifuges, sample heaters, glass centrifuge tubes, glass thermometers, glass hydrometers, gaging tapes and oil thiefs.

Our original Melton Oil Centrifuge was first manufactured in 1957 and became the basis for ASTM standards still relevant today. Each L-K product conforms to ASTM (American Society for Testing & Materials) and API (American Petroleum Institute) standards.

Our motto is “Demand a Higher Standard”. We strive daily to design, build and maintain products to the highest standards possible. We manufactured the first Class I, Division 2 certified laboratory centrifuge. This classification ensures safe operation in hazardous locations. With the acquisition of Miller-Weber of Texas and relocation of the ISO/IEC 17025 accredited laboratory, we now calibrate glassware and equipment in-house.

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L-K Industries:
6952 Lawndale, Houston, Texas 77023
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  • 27 percent
    27 percent
    of our staff with engineering backgrounds.

    To design the best oil testing equipment for the petrochemical industry, technical expertise is required. From our production team to our CEO, everyone in our organization contributes to our “team engineering” approach in designing industry-leading crude oil centrifuges, centrifuge tubes, water baths, heaters, gauging accessories, and thermometers.

  • 1930Years
    Year L-K was founded.

    Since our formation nearly 87 years ago, the company has evolved from originally manufacturing pumps and valves to serving a much wider array of petroleum and laboratory customers. Starting with our first oil centrifuge in 1957 (“The Melton”), the company evolved to making portable centrifuges (“The Transport Series”) in the 1980s and through a partnership with ExxonMobil designed our first lab centrifuge (“The Benchmark Series”). In 2016 the company pushed further into the laboratory segment by acquiring Miller & Weber, Inc. This expansion included a full range of thermometers and calibration services. As we move forward, the company will continue to build on its rich history and look for opportunities to grow.

  • 2 numbers
    Number of patents filed.

    Innovation is at the heart of what we do. Last year alone, L-K filed two new patents, which range from SMART Centrifuge technology to proprietary chemistry used in thermometers. 2017 will allow us to build on this momentum and help us to continue bringing the best oil testing equipment to lab technicians, pumpers/gagers, crude oil haulers, measurement technicians, QA/QC managers, and other petrochemical experts.

  • 22 numbers
    Number of Class I, Division 2 products offered by L-K.

    L-K Industries offers a full range of ETL listed, Class I, Division 2 certified and CSA-approved equipment for basic sediment and water (BS&W) testing. The Benchmark C Laboratory Centrifuge, Criterion Water Bath, and Trademark Dry Block Heater provide an unmatched suite of products for laboratories, pipeline companies, and refineries to accurately measure crude oil samples. L-K is proud to be the only U.S. manufacturer to offer this equipment with a third-party certification. When you put your trust in L-K for CID2 equipment, rest assured that you’re getting the best in the industry.

Innovative upgrades and new products are coming soon!

Our corporate headquarters and manufacturing operations are located in Houston, Texas. This facility also contains the Research and
Development division that is responsible for the design, development, testing, and continued improvement of LK’s oilfield technology.

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Standards we follow

  • API MPMS Chapter 10.4

    Determination of Water and/or Sediment in Crude Oil by the Centrifuge Method (Field Procedure).

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  • Standard ASTM D4007

    Standard Guide for Sediment and Water Determination in Crude Oil - Active Standard ASTM D4007.

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  • Class I, Division 2

    Intertek is the industry leader with over 38,000 people in 1,000 locations in over 100 countries.

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  • ISO/IEC 17025 Accreditation (Miller-Weber of Texas only)

    General requirements for the competence of testing and calibration laboratories.

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Our Distributors

  • As an international supplier, L-K Industries has developed several distribution partnerships to ensure that our products are accessible around the world. Click below to find our distributors by region.

    Our Distributors

Our Clients Say

Years ago we stopped using L-K products. They came back to us seeking feedback and really listened. Today, we are committed to using L-K Products and value their focus on customer service.

End User

We switched our entire fleet to L-K in 2007 and have been very happy. L-K gets it done and gets it done on time.


We sell every centrifuge we get from L-K… L-K’s quality and price is the best.