SPI Fine Grid Mesh - Metal

High quality yet inexpensive calibration aid for SEM and LM


SPI # 2900N-AB 2000 mesh nickel screen viewed by SEM. The repeat spacing is 12.7 µm. Note the high uniformity and regularity of the mesh and the smoothness of the grid bars.

Introduction:
These fine grid mesh materials are manufactured in three different metals: copper, nickel, and gold. Available in different mesh sizes, these fine mesh products do not have the accuracy needed, on a one square basis for making a meaningful calibration measurement. We would recommend that any measurements for calibration purposes should encompass a minimum of 20 consecutive squares. Fine grid mesh is also available in a high quality, high purity Nylon^® mesh.

All of the SPI mesh products shipped as square pieces between two clean polymer film sheets, resulting in a convenient "sandwich" which can easily be cut with ordinary scissors into needed sizes for eventual use. Note that these two polymer film sheets are not permanently bonded to the mesh, and are easily removed so that the mesh by itself can be picked up and used as desired. A handy set of materials to have around any microscopy laboratory, be it light, electron, confocal or even scanning probe. We are of course able to produce mesh in other mesh sizes and other spatial sizes (up to 11" x 11"). If you have a requirement not being met by one of our standard products, let us know what you need. Anything "special" costs more money, but sometimes such costs can not be avoided.

Standard thickness:
For the SPI Supplies standard electroformed mesh, the thickness is between 0.0001" - .0002" (2.5 - 5.0 ľm)
Other thicknesses are possible but only by incurring large set up costs.

High temperature applications:
When special requirements are present, for example, higher temperature screening is need, consider the use of the SPI Molybdenum Mesh.

Grid bar width vs. product fragility and quality:
Making these fine mesh grid products is a balance between the desire for greater open area and the need for the mesh to have enough mechanical strength to be handled. The wire mesh products that we offer are a compromise between these two, conflicting objectives. If we go to thinner bars, the probability of damaged and/or incomplete bars goes up considerably, so the products we do offer represent the best we can do on thin bars on a sustained basis. We share the desire of some of our customers for greater open areas in these products, but we're really not in a position to do it at a quality level that both we at SPI Supplies as well as our customers would find satisfactory

Information about handling:
The mesh can be cut with a precision scissors or even a single edge razor blade. And once cut, the mesh will lie flat and won't curl up into a "roll". One does have to exercise care to keep the mesh from wrinkling, since the folds tend to be permanent and won't come "out". But contrary to what some might think, these mesh materials do not curl up when cut into smaller pieces.

Specifications:
We do not offer these mesh products to be the best possible magnification calibration products, and though we realize some will end up being used just that way, we want to stress that we feel there are other more accurate and more appropriate products to be used for microscopy calibration purposes. But having said that, we would cite the following specifications to which we attempt to do the manufacturing of these mesh products:

Open area: ą 3%
Hole size: ą 2.5 ľm
Bar width: ą 2.5 ľm

Gold

					1"x1"(2.54 cm) square			6"x6"(15.25cm) square
		Hole	Wire	Open
Metal	Mesh	Size	Width	Area	SPI #	Each	In Stock	SPI#	Each	In Stock
		µm	µm	%

Ni	2000	7.6	5.0	36	02900N-AB	$ 57.31	Yes	02900N-AG	$ 616.76	No

Cu	1500	11	5.6	44	02901C-AB	$ 71.37	No	02901C-AG	$ 1417.06	No
Ni	1500			44	02901N-AB	49.41	Yes	02901N-AG	571.17	Yes
Au	1500			44	02901G-AB	296.00	Yes	02901G-AG	5000.00	No

Cu	1000	18	7.4	50	02899C-AB	$ 124.65	Yes	02899C-AG	$ 1338.91	No
Ni	1000			50	02899N-AB	49.41	Yes	02899N-AG	402.20	Yes
Au	1000			50	02899G-AB	296.00	Yes	02899G-AG	5000.00	No

Cu	750	25	8.6	55	02799C-AB	$ 54.90	Yes	02799C-AG	$ 918.36	No
Ni				55	02799N-AB	39.74	Yes	02799N-AG	345.87	No
Au				55	02799G-AB	296.00	Yes	02799G-AG	5000.00	Yes

Cu	500	39	11.4	60	02599C-AB	$ 49.41	Yes	02599C-AG	$ 915.73	No
Ni				60	02599N-AB	50.00	Yes	02599N-AG	570.00	Yes
Au				60	02599G-AB	296.00	Yes	02599G-AG	5000.00	No

Cu	200	112	14.7	78	02299C-AB	$ 105.35	Yes	02299C-AG	$ 1511.40	Yes
Ni	200			78	02299N-AB	34.51	Yes	02299N-AG	274.50	Yes
Au				78	02299G-AB	292.81	Yes	02299G-AG	3858.80	Yes

Cu	100	234	19.8	85	02199C-AB	$ 38.43	Yes	02199C-AG	$ 478.73	No
Ni	100			85	02199N-AB	33.47	Yes	02199N-AG	274.50	Yes
Au				85	02199G-AB	104.57	Yes	02199G-AG	1500.00	Yes

Ni	80	386	24.8	85	02980N-AB	$ 43.92	Yes	02980N-AG	$ 274.50	Yes

Ni	30	785	61.5	86	02930N-AB	$ 43.92	Yes	02930N-AG	$ 274.50	No

Ni	5	5028	51.1	98	02905N-AB	$ 43.92	Yes	02905N-AG	$ 274.50	Yes

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