- 1.5 x 0.3mm Slot TEM Support GridsSlot grids are suitable for specimen support when viewing entire large cells for serial sections where grid bars may interfere with sequential information. Slot size 1.5 x 0.3mm. Copper, Cu/Pd, Nickel & Gold.Average lead time: 12 to 43 daysFrom £29.29Average lead time: 12 to 43 days