Application Notes

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Achieving Traceable Flow Measurement and Control of Gases in Scientific Research and Biopharmaceutical Systems
Monday, June 13, 2011
Larry Gallagher
As more research in science and pharmaceutical development is dependent on understanding and controlling the growth of cells and complex biochemical reactions, accurate and traceable measurement and ... Read More
Designing Safety Into Site-Wide Gas Distribution Systems
Tuesday, June 14, 2011
Mike Marone Ron Geib
When setting up a gas distribution system in a laboratory or any other type of facility, the safety of all personnel must be taken into consideration. Read More
Density Gradient Separations in Vertical Tube, Near Vertical Tube, Fixed Angle, and Swinging Bucket Rotors: A Comparative Study
Saturday, September 01, 2007
Owen Mitch Griffith
Over the years, researchers have used density gradient techniques for separating viruses and macromolecular species such as proteins, subcellular organelles, and nucleic acids. Read More
Ion Exchange for Proteomics
Thursday, February 01, 2007
Xueying Huang Virginia McKay
Ion exchange is particularly well suited to the separation of biological molecules; however, limitations of HPLC packing materials have restricted its use. Silica-based ion-exchange materials are pH ... Read More
Simultaneous Crystallization Testing in a Laboratory Furnace
Thursday, June 16, 2011
Branislav Cabric Nebojsa Danilovic Aco Janicijevic
A previous paper described a model of an air-cooled test tube with a series of sockets and plugs (crystallization socket-outlet adaptor) installed in a laboratory chamber furnace, the goal of which ... Read More
TGA With Evolved Gas Analysis
Saturday, January 01, 2005
Tom Basalik
In thermogravimetric analysis (TGA), the weight of a sample is recorded as a function of temperature or time under defined atmospheric conditions. Read More
A High-Sensitivity Sensor for DSC
Friday, August 05, 2005
Rudolf Riesen Blaine Weddle
A dramatic increase in sensitivity at low signal noise without a significant loss in signal resolution has been achieved with the HSS7 high-sensitivity sensor. Read More
A New Approach to Atomic Force Microscopy for Nanometrology Applications
Friday, April 01, 2005
Paul West Zhiqiang Peng Natalia Starostina
Since the invention of the atomic force microscope (AFM), the use of high-resolution topographic images has become the standard in microscopy and surface science publications. Read More
New Frontiers in Chromatography
Tuesday, February 01, 2005
Michael E. Swartz Brian Murphy
High-performance liquid chromatography (HPLC) has proven to be the predominant technology used in laboratories worldwide during the past 30-plus years. Read More
Creating Rich Web-Based LIMS With Programmable XML Technologies
Thursday, September 01, 2005
Dinu Toiba
Laboratory information management systems convert mass amounts of data into analytical information useful throughout the enterprise. Read More
Rapid Testing of Toxic Chemicals
Tuesday, March 01, 2005
Nathalie Boucher Lucie Lorrain Marie-Eve Rouette Elisabeth Perron Nancy Déziel Louis Tessier François Bellemare
The measurement of chlorophyll fluorescent signals from photosynthetic enzyme complexes (PEC) has becomeone of the most powerful indicators for ecophysiologists. Read More
Synthesis of Mn²⁺-Doped PbS Quantum Dots and Their Spectroscopic Properties
Tuesday, February 01, 2005
Curtis Deer Raymond Sung Pedro Gonzalez Beerman Subra Muralidharan
Quantum dots are semiconductor nanocrystals that have size-dependent properties, unlike bulk materials, as indicated by the well-studied CdSe system. Read More
Ten Steps to Maintaining Gas Stream Purity
Friday, September 23, 2005
Frank Kandl
Many problems in gas chromatography follow a cylinder change-out, prompting chemists to buy ever-higher purity grades of gas. Read More
Compact Spectroscopy Instrumentation: On-Board Smarts or External Computer?
Tuesday, February 01, 2005
Hector Lara Ron Hartmayer
Compact, array-based spectrometers continue to develop in response to advances in detector, microprocessor, storage, and display technology. Read More
What’s Happening in Chemometrics?
Wednesday, June 01, 2005
Susan Foulk
Chemometrics is the discipline associated with the application of mathematical and statistical methods to chemical measurements. Read More
Miniaturized FTIR for Maximized Productivity
Tuesday, March 01, 2005
Ken Fredeen John S. Seelenbinder Mark L. Norman
In today’s fast-paced business environment, many companies are under pressure to improve their productivity. This is especially true in the pharmaceutical industry, where reducing time-to-market ... Read More
Quantifying the Benefits of Standardizing on LIMS
Thursday, February 03, 2005
Jim Neville Catherine Brown
The marked trend by organizations toward standardizing on critical information technology (IT) systems and applications has now moved into the laboratory environment. Read More
Optimizing the Sensitivity of an Evaporative Light Scattering Detector
Tuesday, October 12, 2004
Peter Froehlich Rodolphe Pennanec
The evaporative light scattering detector (ELSD) is a universal, mass-based detector for HPLC, ultraperformance liquid chromatography (UPLC), gel permeation chromatography (GPC), and supercritical ... Read More
Use of New Scanning Technology to Elucidate Ion Channel Mobility
Friday, April 01, 2005
Angela Goodacre Kristen M.S. O’Connell Michael M. Tamkun
Fluorescent chromophores fused to specific proteins have greatly increased our ability to image dynamic events within the living cell. Read More
An NPDES Distillation Method for Measuring Total Cyanide in Water
Saturday, October 01, 2005
John R. Sebroski Karin L. Bogren
Used for total cyanide distillation, the MICRO DIST system was granted National Primary Drinking Water Regulations (NPDWR) approval in 2003 and is expected to receive nationwide Tier III approval for ... Read More