SPI Aperture Grids

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• Allows the microscopist to see a complete section without grid bar interruption.
• Smooth edges.
• Excellent dull/shiny side discrimination.
• The thickness of a particular grid pattern depends on the size of the hole, the larger the hole, the thicker the grid, in order to give the grid better dimensional stability and stiffness. The thickness varies from 25 µm for the smallest hole to 50 µm for the thickest hole.
• Thickness variation on a given grid varies with the thickness. The standard deviation for the thickness and the thinnest grids are given as
GA75 : 25 µm ± 3 µm
GA2000 : 50 µm ± 5 µm
with the other grid thicknesses falling in between these two values.


Order numbers include a code letter that indicates metal type:



C=Copper

N=Nickel

G=Gold

P=Copper/Palladium

GC=Gold Plated Copper

GN=Gold Plated Nickel


Gold plated copper and gold plated nickel grids for inertness of gold, but for a much lower price

	50 µm Hole Diameter		75 µm Hole Diameter
	100 µm Hole Diameter		150 µm Hole Diameter
	200 µm Hole Diameter		300 µm Hole Diameter
	400 µm Hole Diameter		500 µm Hole Diameter
	600 µm Hole Diameter		800 µm Hole Diameter
	1000 µm Hole Diameter		1500 µm Hole Diameter
	2000 µm Hole Diameter