CARBON-SULFUR DETERMINATIONS
to less than OHM
FUTURE ARTICLES Decision and Detection Limits and Linear Calibration Curves A. Hubaux and G. Vos
Direct Current, Alternating Current, Rapid and Inverse Polarographic Methods for Determination of Tin(IV) A. M. Bond
DIRECT READING FAST ACCURATE AUTOMATIC WIDE RANGE The direct reading range of the LECO WR-12 Wide Range Carbon Determinator is 3.5% to less than 0.01%. Accuracy is ± .002% C or ± 1% C present, whichever is greater. The WR-12 is completely automatic and a n electronic weight compensator permits results to be read directly from an all-electronic digital display. Other LECO Carbon Determinators include the moderatelypriced 70-Second Model and t h e Low-Carbon .Model for carbon determinations of less than 0.0005%.
Titanium Determination with Disodium-1, 2-Dihydroxybenzene-3,5-Disulfonate in Oxalic Acid Solution L. J. Clark
Semiquantitative Analysis of Mixed Gamma-Ray Spectra by Computerized Learning Machines L. E. Wangen and T. L. Isenhour
Semi-Automatic Spectrophotometric Method for Determination of Hydroxide and Aluminum in Sodium Aluminate Solutions R. S. Danch/'k and R. T. Oliver
Mass Spectrometric Determination of Mixtures of Zirconium, Hafnium, and Titanium Using Integrated Ion Current Method M. G. Allcock, R. Belcher, J. R. Majer, and R. Perry
Application of Capillary Burners in Flame Spectrometry K. M. Aldous, R. F. Browner, R. M. Dagnall, and T. S. West
At the 1650° C temperatures possible in t h e Induction F u r n a c e of t h e LECO Automatic Sulfur Determinator, sulfur recovery is consistent. A short, clean delivery system prevents loss of combustion products. The Automatic Titrator combines the accuracy of a photocell end-point with the sensitivity of an automatic solenoid. Complete determination of a wide variety of materials having sulfur contents ranging from less than 0.001% to 50% takes only 3 to 6 minutes.
LABORATORY EQUIPMENT CORPORATION 1415 HILLTOP ROAD · ST. JOSEPH. MICHIGAN 49085
Polarography of Phthalic Anhydride Molecule in Water-Acetone Media D. Kyriacou
Quantitative Determination of Ethoxyl in O-Ethylcellulose and in Ethyl-Hydroxyethyl Cellulose H. Jacin and J. M. Slanski
Bulk Susceptibility Corrections in Nuclear Magnetic Resonance Experiments Using Superconducting Solenoids D. H. Live and S. I. Chan
Volumetric Determination of Pyridine Bases Using Iron(lll) Hydroxide Sulfate as Indicator Y. Koda
Application of Photoelectron Spectrometry to Pesticide Analysis: Photoelectron Spectra of 5-Membered Heterocycles and Related Molecules A. D. Baker, D. Betteridge,
Circle No. 72 on Readers' Service Card
148 A · ANALYTICAL CHEMISTRY, VOL. 42, NO. 6, MAY 1970
N. R. Kemp,
and R. E. K/rby
