Description
DESCRIPTION
SIZE SPECIFICATIONS METAL PURITY SPECIFICATIONS for transmission electron microscopy packed in anti-static vials useful for EDX analysis, high temperature and cryo applications packed in anti-static vials These grids are available in molybdenum, titanium, aluminum and stainless steel 316. The grids are made by a high precision etching process. The thickness is approximately 25µm for Mo and Al, 15µm for Ti and 12µm for stainless steel. The pattern with the 350-400µm wide rim on the PELCO® grids provide greater stiffness and improves handling of the grids. All grids have a standard diameter of 3.0 to 3.05mm. Available styles are: square mesh, hexagonal mesh, double folding grids, tabbed grids, slotted and aperture grids. The square mesh and double folding grids have a center mark. For standard grid materials such as Cu, Ni and Au, please go to the PELCO® Grids page. Packaging: Mo, Ti, Al and Stainless Steel grids are packaged in 25grids/vial. 75: Pitch 339µm; Hole Width 284µm; Bar Width 55µm; Transmission 70% Tabbed PELCO® Tabbed Center-Marked Grids, 75 mesh, 3.0mm O.D.,Titanium, 25/vial Rim Width:
350-400µm. Thickness:
25µm for Mo, and Al 15µm for Ti 12µm for Stainless Steel Diameter:
3.0 to 3.05mm Finish:
Being made of thin foils, both sides show same surface Packaging:
25 grids/vial 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 Alluminum A Molybdenum M Stainless Steel
S Titanium T PELCO® Grid Size Square Mesh Pitch µm Hole µm Bar µm % Transmission 75 339 284 55 70 100 254
204
50
65 200
127
90
37
50 300
85
54
31
40 400
64
38
26
35 Impurities (ppm) in PELCO® Special Metal Grids Element
Aluminum
Molybdenum
Stainless Steel 316
Titanium Aluminum
99%
<20
–
<300 Calcium
–
<20
–
<20 Carbon
–
<40
<1200
<300 Chromium
–
<50
<16.5-20%
<50 Copper
<1000
<20
–
<5 Hydrogen
–
<5
–
<60 Iron
<7000
<50
balance
<1500 Lead
–
<30
–
– Magnesium
–
<20
–
– Manganese
<1000
–
<2%
<100 Molybdenum
–
99%
2.0-3.5%
<100 Nickel
–
–
<8-14%
<50 Nitrogen
–
<10
–
<150 Oxygen
–
<30
–
<2000 Potassium
–
<2
–
– Silicon
<5000
<50
–
<300 Tin
–
–
–
<200 Titanium
–
<30
–
balance Tungsten
–
<10
–
– Zinc
<1000
–
–
–
