SPI Wehnelt Tantalum Apertures

These high quality Wehnelt apertures are produced from high purity tantalum foil. They are a replaceable item for AMRAY and FEI/Philips scanning electron microscopes and when installed, relative to the old and dirty apertures, one can expect to see a significant improvement in performance. The SPI Wehnelt apertures are also available in platinum, the advantage being that they can be easily cleaned without needing a vacuum evaporator.

	SPI #	Each
200 µm	04215-AB	$48.83
300 µm	04216-AB	58.48
400 µm	04217-AB	60.19
500 µm	04213-AB	48.83
750 µm	04214-AB	48.83
1000 µm	04201-AB	48.83
1200 µm	04211-AB	81.33