Keithley Instruments, Inc.
1
NEW BOOKS This is the third annual report on progress of the Microchemical Analysis Section of the Analytical Chemistry Di- vision of the National Bureau of Stan- dards. Revision of the NBS Tables of Spec- tral-Line Intensities Below 2450 À. Charles H. Corliss. NBS Monograph 32 Supplement. S3 pages. 1967. SO cents. W. F. Meggers, C. H. Corliss, and Β. Γ. Scribner authored Parts I and II of the NBS Tables of Spectral-Line In- tensities in 1961. In these two publi- cations, the relative intensities of 39,000 spectral lines with wavelengths between 2000 Â and 9000 A were presented by element (Part I) and by wavelength (Part II). In the present publication, the intensity measurements of the 1400 lines below 2450 A are calibrated, based on experimental values obtained by the hook method for tin and lead. The newly calibrated intensities are pre- sented in three tables. All wavelengths are for normal air, including those be- low 2000 A. Standard Reference Materials: Mossbauer Spectroscopy Standard for the Chemical Shift of Iron Com- pounds. J. J. Spijkerman, D. K. Snediker, F. C. Ruegg, J. R. DeVoe. NBS Miscellaneous Publication S60- 1S. 47 pages. 1967. 40 cents. The publication describes the prepa- ration, calibration, and use of the stan- dard reference material for chemical shift of iron compounds in Mossbauer spectroscopy. The standard is a prop- erly oriented single crystal of sodium pentacyanonitrosylferrate (II) dihy- drate (sodium nitroprusside). Bibliography of Temperature Mea- surement—July 1960 to December 1965. Lief O. Olsen, Carl Halpern. NBS Monograph 37, Supplement 8. 31 pages. 1967. So cents. Twelve hundred additional references in the field of temperature measurement are presented in this supplement to NBS Monograph 27. It supersedes Supplement 1, July 1960-December 1962, issued in 1963. The material in the publication has been collected from scientific journals and reports of inves- tigations from government laboratories. English, French, German, and transla- tions of Russian journals are covered. Now see what HIGH VOLTAGE SUPPLY performance and economy really mean with the NEW KEITHLEY 246 It lets you dial 0-3100 volts dc, stable to 0.01%, for only $450 00 It's a perfect power supply com- panion for Keithley electrometers and picoammeters. Ideal for photo- multipliers, electron multipliers, semiconductors—you name it! Compare what we've put into the Keithley 246 for an idea of what you'll get out of it. Voltages select- able in calibrated 10-volt steps. 0.001% line regulation. Less than 1 millivolt rms noise. Built-in overload protection. Output current limited to less than 13 milliamperes and recovery from overload automatic. Maximizing convenience and ease of operation, the Keithley 246 has a variable trim potentiometer with better than 50 mv resolution, front and rear outputs and front panel meter for checking output polarity and magnitude. Meet the best source for outstand- ing lab performance. Call your ex- perienced Keithley Sales Engineer for our technical engineering note and personal demonstration. Keithley Instruments, Inc., 28775 Aurora Road, Cleveland, Ohio 44139. In Europe: 14 Ave. Villardin, 1009 Pully, Suisse. Prices slightly higher outside the U.S.A. and Canada. KEITHLEY See ACS Laboratory Guide for All Products/Sales Office Circle No. 35 on Readers' Service Card VOL 40, NO. 1, JANUARY 1968 · 9 9 A
Transcript of Keithley Instruments, Inc.
NEW BOOKS
This is the third annual report on progress of the Microchemical Analysis Section of the Analytical Chemistry Division of the National Bureau of Standards.
Revision of the NBS Tables of Spectral-Line Intensities Below 2450 À. Charles H. Corliss. NBS Monograph 32 Supplement. S3 pages. 1967. SO cents.
W. F. Meggers, C. H. Corliss, and Β. Γ. Scribner authored Parts I and I I of the NBS Tables of Spectral-Line Intensities in 1961. In these two publications, the relative intensities of 39,000 spectral lines with wavelengths between 2000 Â and 9000 A were presented by element (Part I) and by wavelength (Part I I ) . In the present publication, the intensity measurements of the 1400 lines below 2450 A are calibrated, based on experimental values obtained by the hook method for tin and lead. The newly calibrated intensities are presented in three tables. All wavelengths are for normal air, including those below 2000 A.
Standard Reference Materials: Mossbauer Spectroscopy Standard for the Chemical Shift of Iron Compounds. J. J. Spijkerman, D. K. Snediker, F. C. Ruegg, J. R. DeVoe. NBS Miscellaneous Publication S60-1S. 47 pages. 1967. 40 cents.
The publication describes the preparation, calibration, and use of the standard reference material for chemical shift of iron compounds in Mossbauer spectroscopy. The standard is a properly oriented single crystal of sodium pentacyanonitrosylferrate (II) dihy-drate (sodium nitroprusside).
Bibliography of Temperature Measurement—July 1960 to December 1965. Lief O. Olsen, Carl Halpern. NBS Monograph 37, Supplement 8. 31 pages. 1967. So cents.
Twelve hundred additional references in the field of temperature measurement are presented in this supplement to NBS Monograph 27. I t supersedes Supplement 1, July 1960-December 1962, issued in 1963. The material in the publication has been collected from scientific journals and reports of investigations from government laboratories. English, French, German, and translations of Russian journals are covered.
Now see what HIGH VOLTAGE SUPPLY performance and economy really mean with the NEW
KEITHLEY 246
It lets you dial 0-3100 volts dc, stable to 0.01%, for only $450 00
It's a perfect power supply companion for Keithley electrometers and picoammeters. Ideal for photo-mult ip l iers, electron mult ipl iers, semiconductors—you name it!
Compare what we've put into the Keithley 246 for an idea of what you'll get out of it. Voltages selectable in calibrated 10-volt steps. 0 .001% line regulation. Less than 1 millivolt rms noise. Built-in overload protection. Output current limited to less than 13 milliamperes and recovery from overload automatic. Maximizing convenience and ease of operation, the Keithley 246 has a variable tr im potentiometer with
better than 50 mv resolution, front and rear outputs and front panel meter for checking output polarity and magnitude.
Meet the best source for outstanding lab performance. Call your experienced Keithley Sales Engineer for our technical engineering note and p e r s o n a l d e m o n s t r a t i o n . Keithley Instruments, Inc., 28775 Aurora Road, C leve land, Ohio 44139. In Europe: 14 Ave. Villardin, 1009 Pully, Suisse. Prices slightly higher outside the U.S.A. and Canada.
KEITHLEY See ACS Laboratory Guide for All Products/Sales Office
Circle No. 35 on Readers' Service Card
VOL 40, NO. 1, JANUARY 1968 · 9 9 A
