Holmes Bros, a division of Preiser Scientific, specializes in providing a wide range of equipment and supplies for coal and coke testing in laboratories. Their offerings include crushers, pulverizers, sieves, testing screens, and various analysis instruments for coal and coke preparation, separation, and analysis. Additionally, they supply chemicals, reagents, solvents, standards, and titrants specifically tailored for coal and coke testing applications. Holmes Bros focuses on delivering high-quality laboratory equipment and consumables to support accurate and efficient testing processes in the coal and coke industry.