The I.S.T.R.C. System of developing a better understanding of the physical properties of sand-based greens, push-up greens, and athletic fields started in the spring of 1991. Working with hundreds of courses throughout the U.S., including most of the top-rated courses in the world, I.S.T.R.C. has built a strong database of information and knowledge.

If you are considering replacing your bunker sand, Thomas Turf can help you select the sand that will perform the best through a series of tests designed to estimate the potential for the formation of fried egg lies, surface crusting, and general set-up.

The labs that make up Turf & Soil Diagnostics (formerly Hummel & Co and Turf Diagnostics & Design) have a combined 50-plus years of providing quality services and advice. They have performed testing for thousands of golf courses, sports fields, landscapes, and agricultural sites located throughout the world.