Magnetic Stir Bars - 12 Pieces The magnetic stir bars set SBS-STIR3 comes with 12 pieces and consists of different sized PTFE coated stir bars, which are especially suitable for magnetic stirrers and stirring processes. The set includes magnetic stirring bars with seven different lengths (5 - 70 mm) distributed over six different diameters (3 - 9 mm). These magnetic bars are protected against heat, abrasion, chemical corrosion and are very easy to clean and disinfect. Steinberg's high quality laboratory supplies are used across all industries in many different companies. They are used in the pharmaceutical industry, in various laboratories, in biochemistry, in research and in many other fields of activity. 12-piece set - different lengths, diameters and shapes high abrasion and corrosion resistance thanks to the PTFE coating easy cleaning and disinfection strong magnet use universal field of application, suitable for all liquids and substances