HUMBOLDT began operations in 1909 manufacturing asphalt, cement and oil testing apparatus and supplies in a typical 3-flat building just north of Chicago’s Humboldt Park. The company moved to Norridge Illinois where it continued to build upon its product range becoming the premier U.S. provider of construction materials testing equipment.

Nuclear Density Gauge - HS-5001SD

All Humboldt nuclear gauges are built rugged for the day-to-day rigors of construction projects. These gauges are built to last using high-quality Noryl® PPO material, which is one of the most dimensionally stable thermoplastics available.

This produces a gauge housing that is less brittle than the competition resulting in less breakage. Humboldt gauges also pay strict attention to sealing the gauges against dirt and dust, providing a better design and less electronic problems due to dust.

HM-5020 Triaxial Loader

The Humboldt Triaxial Loader has been specifically designed to handle triaxial testing applications, including: UU, CU and CD triaxial and UC. From educational institutions and consulting firms to high-volume commercial labs and construction projects, the Triaxial Loader can handle any application with ease.

Its heavy-duty design and precise stepper-motor control provide a stable platform for years of reliable service allowing the Triaxial Loader to perform any tests required up to its load capacity of 3000 lbf (15kN).

Humboldt‘s HM-5125A.3F

Humboldt‘s load frame has been designed to provide precise, test-rate control for the automated testing of balanced mix samples. This control is provided by a Closed-Loop Feedback control of the speed function, which ensures highly-accurate results.