From the makers of SigmaPlot™
PeakFit
SAMPLE PREPARATION BOMBS FOR TRACE METAL ANALYSIS
TM
Quantitative Peak Analysis... on your own PC. Restriction Fragment Chromatograpiiy Ιη«2ΐΙ1.60429.3β.002.0.85162Βί e8l»sZID.72272.3B.9999.D.8e5344IDlilCum3l0.44420959,43.t991,5.Sl1M. 1.60827) tm&4(0.903744,49.9983,1.98584) , ,,. No Background X2=0.0050099H! r2=0.99964S26 1.75
Introducing PeakFit'" dedicated peak analysis software! Designed for anyone who needs to separate peaks or multiple functional forms for analysis and calculation, PeakFit gives you the unique ability to observe and control algorithm performance on screen, iteration by iteration, for fast and accurate determination of the best fit for your data. PeakFit's state-of-the-art tools include: • Unique graphical visual interaction with data — you control the non-linear curve-fitting operation by manipulating the curve placement and parameter values right on the screen. • Quantitative analysis — areas, centers, amplitudes and widths of individual peaks automatically calculated. • Full numerical review — parameter/fit statistics include stand ard error, confidence limits, F-statistics, residuals, t-values, etc. • Extensive built-in equation library — 26 different specialized functions, including Gaussian, Lorentzian, Voigt, Pearson VII, Symmetric Double Cumulative, even user-defined functions. 'Numerous input/output options — dot matrix, LaserJet", Post script" printers. SigmaPlot 4.0", Lotus, ASCII and other formats. • Easy to use — Industry standard mouse-driven interface. • Applications — Chromatography, Spectroscopy, Electrophoresis, Electronics, Pharmacology, Statistical Analysis and Engineering. Priced within reach of most research budgets, PeakFit is backed by a full money-back guarantee... and one of the strongest support staffs in the industry. To find out more about PeakFit or other scientific and engineering software from Jandel, just call us: 1-800-874-1888 (inside U.S.), or 1-415-924-8640 (outside U.S.
Jandel N TT II F F II C C SS CC I I EE N
65 Koch Road · Corte Madera, CA 94925 Phone: 415-924-8640 FAX: 415-924-2850 In Europe: Schimmelbuschstr. 25 · 4006 Erkrath 2 · FRG 02104/36098 · 02104/36099
Available in a variety of sizes and styles, our teflon-lined Acid Diges tion Bombs are designed for microwave and convection heating. Use them to treat in organic samples in HF, HC1 and other strong mineral acids.Or to digest organic samples in strong alkali or oxidizing acid at elevated temperatures and pressures.
Our Oxygen Combustion Bombs decompose any combust ible solid or liquid — quickly and completely. The sealed bomb contains and converts materials to a soluble form while allowing complete recovery of all elements. Now available in a new longer-lasting mat erial for high halogencontaining substances.
For complete details ask for our free Brochure #4700.
PARR INSTRUMENT COMPANY
Parr
211 Fifty-Third Street Moline, IL 61265 309-762-7716 Telex: 270226 Fax: 309-762-9453
Call for free brochure: 800-874-1888 CIRCLE 72 ON READER SERVICE CARD
24 A • ANALYTICAL CHEMISTRY, VOL. 63, NO. 1, JANUARY 1, 1991
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112
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