Tonkin Materials Testing Limited is a family owned business offering an independent service for the sampling, site and laboratory testing of asphalt, aggregates and soils.

The business was started in 1985 by Greg Tonkin offering a service to monitor the compaction of cement, lime and bitumen bound materials and soils using a nuclear density gauge.

Other site based testing of materials and workmanship were also undertaken and materials and soil samples were mainly submitted to established laboratories for testing. In 1988, Greg changed the trading name from “Greg Tonkin Nuclear Density Testing Service” to “Tonkin Materials Testing” to reflect the change from the original primary activity of nuclear density testing by an individual to general materials testing but retained the “Tonkin” identity that was established in the field of materials testing in the construction industry.

Tried, tested and trusted for over 30 years to help deliver your project to the highest possible standard.