Dynalon Stir Bar Round No Ring, Ptfe 8x19mm

Dynalon stir bar round no ring, ptfe 8x19mm;
round stirring bars feature… alnico v magnetic cores which are one of the most powerful permanent magnet alloys available.
round stir bars should not… be stored in a random mass or dropped on a hard surface, especially steel.
stir bars should… be stored in pairs to maintain magnetic strength.
in general…ptfe thickness accounts for 18% of stir bar diameter - DYNA