SPI Wehnelt Tantalum Apertures

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

Tantalum
10mm O.D. x 0.1mm Thick

SPI Wehnelt Tantalum Apertures

Hole Diameter	SPI #	Each		In Stock
200 µm	04215-AB	$65.00		No
300 µm	04216-AB	65.00		No
400 µm	04217-AB	65.00		Yes
500 µm	04213-AB	65.00		No
750 µm	04214-AB	65.00		No
1000 µm	04201-AB	65.00		Yes
1200 µm	04211-AB	81.33		Yes