Click to expand Tap to zoom Kimball ES-423E LaB6 cathode, FEI/Philips base, 90 degrees/20Вµm round tip for Thermo & FEI SEM and Philips PSEM 500 and later (except XL-30) SKU AU-14-FP3523-1 Original price $3,592.51 - Original price $3,592.51 Original price $3,592.51 $3,592.51 - $3,592.51 Current price $3,592.51 | / Choose a variant 1 - $3,592.51 Units per package: 1 1 Quantity Add to cart