This Spinbar® stirring bar collection includes a useful assortment of popular sizes of egg-shaped stirring bars.

• Excellent for round-bottom flasks
• Provide their own pivot point without a separate ring or abrupt change in contour
• Offers minimal contact when used in plastic containers
• Convenient storage box segregates sizes and styles for easy, no-rummage organization

Designed especially for use in round-bottom vessels, they spin unrestricted by the vessel contour. Alnico magnets encapsulated in FDA grade Teflon® PTFE are durable and inert. Selection of thirteen magnetic stirring bars includes one 76.2 x 19 mm (3 x ³/₄") and two each of 19 x 9.5 mm (³/₄x³/₈"), 25.4 x 12.7 mm (1x_¹/₂"), 31.8 x 15.9 mm (1¹/₄x⁵/₈"), 38.1 x 15.9 mm (1¹/₂x⁵/₈"), 41.3 x 19mm (1⁵/₈x³/₄"), and 50.8 x 19mm (2x³/₄"). Autoclavable.