Prelens Aperture Strip STS-30-1021

Standard replacement Aperture Strip includes apertures for the following beam currents: 1 pA, 4 pA, 10 pA, 70 pA, 150 pA, 350 pA, 1000 pA, 2700 pA, 7200 pA, 11500 pA. Replaces OEM PN#20098