NORELCO ANNOUNCES
THE NEW UNIVERSAL VACUUM Y DAV CDCOTDnPDflDU
Λ'ηηι or L.U ι n u u n n r π F o r Element; Analysis
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The FIRST and ONLY WIDE RANGE UNIVERSAL X-RAY SPECTROGRAPH X-ray Spectrographic Analysis has long been recognized as a vital, non-destructive method of rapid element determination. The range of elements amenable to X-ray analysis has grown steadily with the years. Special techniques and equipment have been devised, particularly for lighter elements in t h e range of sulphur (16) through magnesium ( 1 2 ) . The helium b a g used on various types of standard Norelco spectrographic equipment is a familiar sight in laboratories throughout t h e United States and the world—yet—despite technological advances,
cost considerations as well as commercial scarcity of helium gas have retarded adoption of gas atmosphere techniques. After intensive research and field testing t h e recent development of the new Norelco Vacuum X-ray Spectrograph has eliminated this obstacle and will now meet t h e increasing demand for wider application of X-ray spectrography in light element determinations. In fact, appreciably higher intensities for t h e elements number 17-30 may now be realized over previous spectrographic procedures.
TJNXQTJE F E A T U R E S SPECIMEN CHANGER. Simultaneous loading of four multipurpose specimen holders. Successive analysis of samples without breaking vacuum.^ Built-in specimen spïnner-^to reduce effects of inhomogeneities. CRYSTAL CHAMBER. Holds two different analyzing crystals. Either crystal may be selected without re-aligning. Crystal holder design provides broad analyzing range. DETECTORS. Scintillation and flow-proportional
detectors are
both mounted on goniometer arm and are available for selective usage. Scintillation counter—for heavy element radiations. Flowproportional counter—for light element radiations. VACUUM. Entire X-ray path evacuated in SO to 90 seconds. Vacuum re-established after specimen insertion 15 seconds." HELIUM or AIR. Chamber design permits alternate use of vacuum, helium or air.
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I n s t r u m e n t s Division 7so SOUTH FULTON AVENUE, MOUNT VERNON, N. Y. Is Canada: Research & Control Instruments · Philips Electronics Industries Ltd. · 116 Vanderhoof Ave. · Leaside, Toronto 17. Ont.
