Preiser Scientific, Inc.

Preiser Scientific, Inc. is a complete source and a “one-stop” shopping center for coal testing equipment to laboratories throughout the world.Preiser Scientific manufactures and distributes coal testing products, including Sulfur Analyzers; Plastometers; Dilatometers; Calorimeters; Ash Fusion Furnaces; Hardgrove Grindability Apparatus; Moisture Ovens; Air Drying Ovens; Free Swelling Index Furnace Systems; Volatile Matter Furnaces; Rotary Sample Divider; Holmes Laboratory Coal Crushers, Pulverizers and Sample Riffles; as well as Analytical Balances and Scales; pH Meters; Microscopes; Laboratory Baths; Furnaces; Environmental and Water Testing Equipment; Filter Paper and many other coal testing and laboratory supply products.Our featured product is a Model 6000 Plastometer-Dilatometer Combination System. Used to determine the plastic properties of coal by the Gieseler constant-torque method, and to determine the expansion and contraction of coal as a function of temperature.