Apertures

Standard and Platinum Apertures

Strip Apertures

Disc Thickness and Hole Sizes Available

Aperture Cleaning

EFFA® Aperture Flamer

Supercub Butane Torch

Aperture Cleaning Boats

Apertures

The following disc diameters are available: .074", .078", .089", 120", .123", .158", .223", .236", .250", .310", .374", .499". Other diameters can be special ordered.

Every effort is made to hold to the following tolerances:
Hole roundness: within 2um
Hole size: -0 to +10% (Up to 50um) and -0 to +5% (Over 50um)

NOTE: Material, thickness, O.D. and hole size must be specified. Order by catalog number, giving hole size and outside diameter of disc. See chart for available sizes.

Standard Apertures
No. 11151: Molybdenum, 0.001" thick. . . . .$44.00
No. 11152: Molybdenum, 0.002" thick. . . . .$44.00
No. 11154: Molybdenum, 0.004" thick. . . . .$44.00
No. 11161: Platinum, 0.001" thick. . . . .$39.50
No. 11162: Platinum, 0.002" thick. . . . .$39.50
No. 11164: Platinum, 0.004" thick. . . . .$39.50

Platinum, 0.010" thick
No. 11165: 0.074" - 0.250" O.D. . . . .$65.00
No. 11166: 0.310", 0.374", 0.499" O.D. . . . .$68.50

Platinum, 0.020" thick
No. 11167: 0.074" - 0.250" O.D. . . . .$65.00
No. 11168: 0.310" & 0.374" O.D. . . . .$87.00
No. 11169: 0.499" O.D. . . . .$131.00

No. 11170: Special or made to order apertures. Please obtain price quotation.

Strip Apertures
The dimensions and hole spacings of strip apertures may change from one microscope to the next, even when they are the same model. To insure accuracy of duplication, please send an old strip with your order. It will be returned with your new strip. Please obtain a price quotation.
No. 61151: Molybdenum strip, 0.001" thick
No. 61152: Molybdenum strip, 0.002" thick
No. 61154: Molybdenum strip, 0.004" thick
No. 61161: Platinum strip, 0.001" thick
No. 61162: Platinum strip, 0.002" thick
No. 61164: Platinum strip, 0.004" thick

No. 61170: Special or made to order strip apertures. Please obtain price quotation.

Aperture Cleaning

No. 13910: EFFA® Aperture Flamer
Platinum holder for flaming disc or strip apertures. Wooden handle. 6" long. . . . . $54.00

No. 13902: Supercub Butane Torch
Convenient, adjustable flame for cleaning apertures. Utilizes disposable butane refills. 5¾" long.
. . . . .$17.55
No. 13903: Supercub Butane Refills, 1 oz. can. . . . .$6.25

No. 12370: Aperture Cleaning Boat Kit
Holds special elongated tungsten boats for heat cleaning disc and strip apertures where a vacuum is required. Includes three No. 12150 boats, threaded support rod, braided lead, and instructions. Available with unthreaded support rod. . . . .$214.30

No. 12380: Aperture Cleaning Boat Kit
Same as No. 12370, without support rod. . . . .$205.30

Note: To replace insulators on the above kits, order eight No. 12301 Ceramic Insulators.

No. 12150: Aperture Cleaning Boats
0.001" thick tungsten 50 x 5 x 2mm boat. Overall length: 75mm. Pkg/3. . . . .$33.60