Gilson Company, Inc.

P O Box 200
Lewis Center, OH 43035 United States

Phone: View Phone Number800-444-1508
Fax: View Fax Number800-255-5314

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Company Description:

Gilson Company, Inc. is a global manufacturer and distributor of quality construction materials testing equipment. Our comprehensive selection of materials testing products for asphalt, aggregates, concrete and soils is one of the largest anywhere, backed by a highly trained customer service staff and experienced technical professionals. Our dedicated Technical Support staff is ready to answer any question you have, whether it’s about equipment, applications, or procedures.


Gilson’s commitment to quality in the construction materials testing industry began in 1939 with the introduction of our first Testing Screen, and today our expertise and innovation is reflected in our core products for particle sizing, sampling, and characterization of aggregates, as well as a complete selection of construction materials testing equipment. As the company has grown, so has our reputation for superior expertise, innovation, and development of particle size analysis and sample dividing equipment. As we constantly develop and seek out new products, our philosophy remains the same; we offer high-quality products at competitive prices, and back up our great customer service with dedicated technical support. Our goal is to exceed your expectations!


Sieves, sieve shakers, testing screens, and sample splitters are our industry-leading products for aggregates testing, along with items for testing the durability and other characteristics of aggregates. Our particle sizing innovations include Testing Screens for very large samples, Sonic Sifters for very small samples, and the industry’s best test sieve shakers that rotate, vibrate, oscillate and tap.  Gilson offers more test sieves than anyone in the industry, and they are in stock, ready to ship today.


Asphalt testing equipment includes products for testing asphalt mix designs, asphalt binder characteristics, and pavement quality. Marshall Stability Systems, Superpave® Gyratory Compactors, furnaces and extractors for asphalt content, are products for testing hot-mix asphalt. binder properties and more are available. Rolling Thin Film Ovens (RTFO), Dynamic Shear Rheometers (DSR), Rotational Viscometers, Bending Beam Rheometers (BBR) and more are provided for asphalt binder characterization.


Concrete testing products for fresh concrete properties, strength tests, molding, curing, moisture and non-destructive testing are best sellers. Gilson offers five different types of concrete air meters including the new SAM Super Air Meter for determination of air-void spacing. Our complete line of concrete compression machines has your choice of controller options, and capacities from 250,000 to 500,000lbf (1112 to 2224kN). Rebar Locator/Cover Meters are available, and some do double duty to locate and document problem areas of reinforcing steel corrosion.


Gilson’s selection of geotechnical laboratory equipment for soil mechanics testing has been developed in close cooperation with Karol-Warner, one of the oldest and most trusted names in soils testing. We feature high-quality and reliable equipment for triaxial, direct-shear, consolidation and permeability testing. Laboratory and field soils testing equipment is also offered for Atterberg limits, hydrometer analysis, Proctor compaction and density, California Bearing Ratio (CBR), as well as a complete line of soil molds. Field equipment for soil density, moisture, penetration resistance and classification is in stock at our warehouse.


Our line-up of ovens, balances, and general labware rounds out our product offerings and lets you find everything you need in one place. Our comprehensive 280-page catalog features accurate, detailed descriptions and valuable application advice, full-color photos and functionality for easy product selection. Our new website at features news, insights, and many helpful videos for information and instruction.


We are proud that after more than 78 years of family ownership and service to the industry, our company has grown, but our core values have never changed. We still treat our customers as we always have, helping them find the best solutions to their problems, even when it means pointing them in a different direction. We know they will be back, because that’s how we want to be treated.


Product Information:
Gilson Rolling Thin Film Oven (RTFO) features fast 8-minute temperature recovery that strictly meets AASHTO and ASTM requirements, and NIST traceable Platinum RTD temperature sensor. Silicone compression gaskets securely grip RTFO bottles for quick loading. Removable bottom tray means easy clean-up and element maintenance. Gilson Company, Inc. 800.444.1508,

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