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SPI-tested for performance, SPI-guaranteed for quality, SPI-labeled for
easy identification: SPI-Grids are the best! Compare the features of
SPI-Grids to others and you will see how superior SPI-Grids truly are.
If your preference is for using the very finest coated grids that are
available anywhere (e.g. carbon coated, Formvar® coated,
holey, SiO2, etc.), then make sure you
check out our SPI Coated Grids Page.
Grids do age like the rest of us except
there is an age reversing process for older grids. And there are
special final cleaning
procedures for those requiring the very highest cleanliness in their
preparation procedures. However, some kinds of grids are more likely to
have to be cleaned than other grids, and some grids do not have to be
cleaned at all. This is
information not normally known or understood by the typical user of
TEM grids. |
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Grid thickness: The optimum thickness for a particular grid depends on the grid pattern itself. It is cheaper to make "thicker" grids because the yields are higher. We tend to supply grids that are on the thinner end of the thickness spectrum because for those doing tilting studies, they will always have a higher % transmission. This is the most noticed with the higher grid meshes. Thinner grids are more costly to make because of lower yields. Yet nothing is lost in terms of dimensional rigidity because of the "rim" which might vary in width depending on the amount of additional stiffness needed. If you are doing tilting studies in particular, you can be sure you are getting the best grids for your type of work if you are relying on grids from SPI Supplies. There are literally hundreds, if not thousands of different grids, different patterns, different materials of construction, not to mention the possibility of different support films, so if you are new to the TEM field, or would like to have some additional background information, consider some of the information in the SPI Guide to TEM Grid Selection. |
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Feature-for-feature, price-for-price, you just can't buy better grids!
Higher Quality Bars
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Better Visibility
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Handy Packaging
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Low, Low Prices
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Ease of Use:
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center mark.
THE FIGURES GIVEN FOR BAR WIDTH AND HOLE WIDTH ARE FOR COMPARATIVE PURPOSES ONLY - THESE VALUES FOR GRIDS OF DIFFERENT MESH SIZES CAN BE EXPECTED TO BE SOMEWHAT DIFFERENT.
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