Description
DESCRIPTION
SIZE SPECIFICATIONS 50: Pitch 508µm; Hole Width 425µm; Bar Width 83µm; Transmission 70% PELCO® Center-Marked Grids, 50 mesh, 3.0mm O.D., Copper, 100/vial
PELCO® Center-Marked Grids, 50 mesh, 3.0mm O.D., Nickel, 100/vial
PELCO® Center-Marked Grids, 50 mesh, 3.0mm O.D., Gold, 25/vial 50: Pitch 508µm; Hole Width 425µm; Bar Width 83µm; Transmission 70% Tabbed PELCO® Tabbed Center-Marked Grids, 50 mesh, 3.0mm O.D., Copper, 100/vial Slotted PELCO® Slotted Mesh, 50/200, Center-Marked Grids, 3.0mm O.D., Copper, 100/vial Folding PELCO® Folding Grids, 50-50 mesh, Center-Marked One Side, Copper, 100/vial The PELCO® Grids are usually somewhat thicker than similar TEM grids made by electro plating processes which makes them stiffer and easier to handle without the danger of bending, but still maintain a good definition of the grid bars. The wide rims (350-400µm) on the PELCO® Grids provide additional stiffness and minimize the potential of interfering with the sample when picking up and handling the grids with tweezers. The popular PELCO® Grids were introduced 45 years ago and have found a large user base in all disciplines of TEM. The grids have a shiny (smooth) finish on one side and matte (rough) or dull finish on the other side. Grids have all been inspected before packaging. A comprehensive selection of different grid styles is offered with the standard outside diameter of 3.05mm. Styles available are Square Mesh, Hexagonal (honeycomb) Mesh, Double Folding Grids, Slotted Mesh, Tabbed Grids, Slotted or Round Hole. Available materials are Cu, Ni and Au. Packaging: Standard Cu grids 100grids/vial, except specials which are listed accordingly. Gold is packaged 25grids/vial. Rim Width:
350-400µm. Thickness:
PELCO® Grids are approximately 25µm thick. Diameter:
3.0 to 3.05mm Finish:
Copper, Nickel and Gold grids have a matte finish on one side and a shiny finish on the other side. Packaging:
100 grids per vial/tube, except for specials which are listed accordingly. Gold, Titanium, Stainless Steel, Molybdenum and Aluminum grids are packaged in 25’s Pitch:
Is 1″/mesh or 25.4mm/mesh Example 200 mesh pitch = 25.4/200 = 127µm From the drawing above, the hole and bar widths are shown. Sometimes “pitch” is used in this terminology and it is the equivalent of hole width plus bar width. Material Code Copper
C Nickel
N Gold
G Aluminum
A Molybdenum
M Titanium
T Stainless Steel
S PELCO® Grid Size Square Mesh Pitch µm Hole µm Bar µm % Transmission 50
508
425
83
70 75
339
284
55
70 100
254
204
50
65 200
127
90
73
50 200 EOA
127
106
21
69 300
85
54
31
40 400
64
38
26
35 400 EOA
64
45
19
48 500
51
28
23
30
