Hitachi Electron Probe Microanalyzer. Hitachi, Ltd. of Tokyo, through its U. S. representative, Erb and Gray Scientific, Inc. (854 South Figueroa St., Los Angeles 17, Calif.) will be offering production models for sale in the U. S. early in 1961. The Hitachi Electron Microprobe Analyzer has a beam spot size of 0.1 micron. Its electron optical system has a lens system of a first and second condenser and projector and an accelerating voltage of zero to 50 kv. in seven steps. The specimen handling system consists of a chamber which permits moving the sample in an X-Y horizontal plane 2 x 1 mm. and vertically 0.5 mm. The scanning rate is 0.6 micron to 1 micron per second. Specimen size range is 1 to 10 mm. diameter. The visual observation system operates over a wave length of 0.6 to 8 angstroms. It will detect elements from atomic numbers 12 to 92 (magnesium to uranium). The crystal is curved (250 mm. radius) and consists of lithium fluoride or ammonium dihydrogen phosphate. The single spectrometer is of the focusing crystal type on a Rowland type circle. The detecting device consists of a scintillation counter, proportional counter, linear amplifier, and pulse height analyzer or ratemeter scaler. It has recording readout. The vacuum system consists of a dual rotary oil pump with automatic valving for airlocks, a diffusion oil pump, and an ionization type vacuum gage.
NYLAB presents...
THE BECKMAN DK SPECTROPHOTOMETER . . . . u s e d i n more a p p l i c a t i o n s t h a n all other recording spectrophotometers combined. The DK Spectrophotometer is automatic and simple to u s e . . . has excellent coverage of ultraviolet, visible and near infrared spectral regions . . . with wavelength range of 185 to 3500mu plus optional optics for probing the far-ultraviolet to 175mu . . . makes analyses faster, turns out more analyses using same number of laboratory p e r s o n n e l . . . lowest priced recording spectrophotometer available. The instrument also has a fluorescent screen for aligning the optics: Provision is made for recording diffraction patterns photographically. The Hitachi instrument with its power supply is 15 feet long, 5 feet wide, and 7 feet high. It operates on 115 v., a.c, and 3 kw. Elion DEM 301 Electron Microanalyzer. Elion Instruments, Inc. (430 Buckley St., Bristol, Pa.) is now in production of their Decimicron electron microanalyzer, model DEM 301. Three are scheduled for delivery during the first three months of 1961. Probe diameter of the DEM 301 is 0.1 micron. The mode of operation includes any and all of three analyses of exciting characteristic x-radiation, electron back-scattering analysis, and electron absorption analysis. In addition to point by point microanalysis, the instrument can produce x-ray images showing distribution of selected
You can arrange for a demonstration . . . more technical information . . . or for immediate delivery. Write or call today.
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New York Laboratory Supply Co., Inc. 76-,-B
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Circle No. 69 on Readers' Service Card VOL. 32, NO. 9, AUGUST 1960
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