Read the Latest Technical Articles for Lab Professionals - Technical Articles | American Laboratory

Sort

Getting the Most Out of Compressed Gases: The Role of the Gas Pressure Regulator
Thursday, March 10, 2011
Mike Marone Ron Geib
Suppliers of compressed gases go out of their way to deliver gas products that meet customer requirements for purity, mixture accuracy, and other specifications. read more
Positional Fluctuation of IR Absorption Peaks: Frequency Shift of a Single Band or Relative Intensity Changes of Overlapped Bands?
Thursday, March 10, 2011
Soo Ryeon Ryu Isao Noda Young Mee Jung
There are two schools of thought in interpreting the so-called positional fluctuation of peaks of IR spectra under the influence of environmental factors, i.e., temperature and concentration. read more
Statistics in Analytical Chemistry: Part 23—Degrees of Freedom in the Lack-of-Fit Test
Sunday, October 01, 2006
David Coleman Lynn Vanatta
In the previous article (Part 22, American Laboratory, June/July 2006), the details behind the lack-of-fit (LOF) test were discussed. read more
Statistics in Analytical Chemistry: Part 24—Glossary
Friday, December 01, 2006
David Coleman Lynn Vanatta
Since the beginning of this series of articles, the central topic has been calibration and its associated uncertainty. read more
Achieving Ultrahigh-Speed Analysis With LC-MS-MS
Tuesday, February 01, 2011
Chris Gilles
Ultrahigh-speed liquid chromatography-mass spectroscopy instruments can accelerate analysis times by at least tenfold compared to conventional LC-MS-MS systems. read more
Statistics in Analytical Chemistry: Part 25—Calibration Summary
Thursday, February 01, 2007
David Coleman Lynn Vanatta
In a modern chemical-analysis laboratory, virtually all of the testing equipment must be calibrated periodically. read more
Update on Field Flow Fractionation After 40 Years, Still the Best-Kept Secret in Analytical Chemistry
Tuesday, February 01, 2011
Robert L. Stevenson, Ph.D.
In middle age, field flow fractionation (FFF) is having an identity crisis, although no one seems to notice. read more
Statistics in Analytical Chemistry: Part 26—Detection Limits: Editorial Comments and Introduction
Friday, June 01, 2007
David Coleman Lynn Vanatta
We believe that detection limits (DLs) should go away. read more
Statistics in Analytical Chemistry: Part 27—Receiver Operating Characteristic (ROC) Curves
Saturday, September 01, 2007
David Coleman Lynn Vanatta
Consider the following algebraic equation: 5x + 11y + 39z = 106 Since this single expression has three unknowns, there are many possible solutions; a single exact solution cannot be found. read more
Fused Core Particles for HPLC Columns
Sunday, April 01, 2007
Joseph J. Kirkland Timothy J. Langlois Joseph J. DeStefano
In recent years, there has been a strong movement toward the use of HPLC columns with smaller particles. read more
Rapid, Quantitative Analysis of Multiple Mycotoxins by Liquid Chromatography Tandem Mass Spectrometry
Sunday, April 01, 2007
Mahalakshmi Rudrabhatla Jason S. Wood
The classical example of detrimental effects caused by bacteria, such as E. coli or Bacillus Anthracis, is through invasion of the host. read more
The Nanoliter Syringes
Thursday, February 01, 2007
Andrew D. Sauter
Following an informal collaboration with Affymax (Palo Alto, CA), Agilent Technologies (Palo Alto, CA), and Chem-Space Associates (Pittsburgh, PA), studying electrospray ionization 1 (ESI), the ... read more
Pittcon® 2011 Editors’ Awards: A Two-Way Tie for the Gold Award
Friday, April 01, 2011
Jeanely Hunt, MS, MBA
Pittcon 2011 was held March 13–18, 2011 at the Georgia World Congress Center in Atlanta, GA. The exhibition displayed an assortment of laboratory products, including anything from small plastic ... read more
Use of Dual-Selectivity IC-ESI-MS for the Separation and Detection of Anionic and Cationic Arsenic Species
Tuesday, May 01, 2007
Rosanne W. Slingsby Rida Al-Horr Christopher A. Pohl Joung Hae Lee
There are times when an analytical challenge demands a solution that reaches beyond standard methodologies. read more
Establishing a Microbial Control Strategy for Active Pharmaceutical Ingredients
Friday, June 01, 2007
Anne M. Warner John D. Stafford Robert E. Warburton
In the pharmaceutical industry, defining the control strategy for a new active pharmaceutical ingredient (API) is a main goal during development of the process for its commercial manufacture. read more
Providing Gases for LC-MS Systems in a Safe, Convenient, and Cost-Effective Manner
Wednesday, August 01, 2007
Peter Froehlich
A liquid chromatographic system with a mass spectrometric detector (LC-MS) requires a supply of nitrogen as the curtain gas, pure zero grade air as the source gas, and dry (–40 °F dewpoint) air as the... read more
Transferability of Pipet Calibrations and Proficiency of Operators: Prerequisites for Method Validations and Method Transfers
Friday, September 25, 2009
A. Björn Carle George W. Rodrigues Richard H. Curtis
Data quality and integrity are among the most important issues for any laboratory, and one of the most obvious ways to maintain quality in a laboratory setting is regular instrument calibration. read more
Thermal Analysis of Biodegradable Material: From Modulated Temperature DSC to Fast Scan DSC
Wednesday, August 01, 2007
Peng Ye Krista Swanson Fiorini
Synthetic polymers derived from petroleum products are used widely on a daily basis. read more
Evaluation of Charged Aerosol Detection (CAD) as a Complementary Technique for High-Throughput LC-MS-UV-ELSD Analysis of Drug Discovery Screening Libraries
Saturday, September 01, 2007
John Loughlin Hong Phan Min Wan Sharon Guo Karen May Baiwei Lin
The successful application of high-throughput screening (HTS) as a tool for drug discovery research has driven the development of both high-throughput organic synthesis (HTOS) for compound collection... read more
Localized Thermal Analysis: From the Micro- to the Nanoscale
Thursday, November 01, 2007
Kevin Kjoller Gregory Meyers Andrew Pastzor
Thermal methods such as differential scanning calorimetry (DSC) and modulated temperature DSC (MDSC), thermogravimetric analysis (TGA), thermomechanical analysis (TMA), and dynamic mechanical analysis... read more

Most Recent Articles

Micromachined HPLC Columns Can Revolutionize Proteomics Workflows
Tuesday, September 26, 2023
Buyer's Guide: GC-MS for Monitoring Environmental Pollutants
Friday, September 22, 2023
Refocusing the Lens of Cancer Screening
Tuesday, September 19, 2023
Study: NGS Should Be Go-to Technology on Day Zero of the Next Pandemic
Friday, September 15, 2023
Overcoming Common Challenges in Sample Viability for Single-Cell Research
Tuesday, September 12, 2023