J. P. Vyas and Co. Supplies Egg-Shaped Magnetic Stirring Spinbar. J. P. Vyas and Co. Supplies Laboratory Instruments, Equipments, Fabricated Laboratory Glassware, Rare and Research Chemicals, Hospital Furnishings and allied Laboratory requirements. The Egg-Shaped Magnetic Stirring Spinbar provides its own pivot point without a separate ring or abrupt change in contour. The Egg-Shaped Magnetic Stirring Spinbar designed especially for use in round-bottom vessels, it spins unrestricted by the vessel contour. The Egg-Shaped Magnetic Stirring Spinbar has egg shaped magnets.