BM-400 Mixer/Mill® (SPEX #8000M) - High-Energy Ball Mill

January 27, 2025

The Cole-Parmer SamplePrep BM-400 Mixer/Mill (SPEX #8000M), is a high-energy ball mill that grinds up to 0.2 - 10 grams of dry, brittle samples. The vial, which contains a sample and one or more balls, is shaken in a complex motion that combines back-and-forth swings with short lateral movements, each end of the vial describing a figure-8. The clamp's motion develops strong G-forces in the vial, to pulverize the toughest rocks, slags and ceramics.

Key Features and Specifications

• Also called a shaker mill or high-energy ball mill.
• Equipped with safety interlock system for operator protection.
• For grinding samples in the 0.2 - 1.5 gram range or mixing up to 5 mL of sample.
• Highly effective laboratory impact grinder and blender offering many advantages over other small mixers.
• Holds three vials of 1/2 in. (12.7 mm) diameter or two vials of 3/4 in. (19.1 mm) diameter. Length of vials up to 21/4 in. (57.2 mm).
• Push-button, resettable 30-minute timer on the 5100-115 Mixer/Mill.
• Push-button, resettable 72-minute timer on the 5100-230 Mixer/Mill.
• Reduces samples to analytical fineness and commonly used to blend samples with KBr for IR analysis.
• Shock mounted motor enables bench top operation.
• Steel housing protects the clamp mechanism and rugged construction ensures a long life of heavy work.
• Wide selection of grinding and mixing vials available including polystyrene, polycarbonate, hardened steel, stainless steel, tungsten carbide, and agate.