Blog

Using Classifications With Mass Spectral Filters to Enhance Results Obtained From GC×GC-TOFMS Analysis
Wednesday, February 01, 2006
Complex sample mixtures have always been a challenge for the analytical chemist. Read More
Reflections on a Third-Generation Mobile Phase Recycler for HPLC
Wednesday, February 01, 2006
The volume of HPLC mobile phase (MP) purchased and discarded each year is about 20,000,000 L, or enough to fill two rail trains each with 100 tank ... Read More
Defragmenting Chiral Chromatography
Wednesday, February 01, 2006
Chiral molecules continue to drive growth across a number of industries as new chemistries, active ingredients, and products are developed and ... Read More
Single-Step Purification of Lactase From a New Isolate of L. acidophilus
Wednesday, February 01, 2006
Lactase (ß-D-galactohydrolase EC 3.2.1.23) is widely distributed in microorganisms, plants, and animals. Read More
Dynamic Light Scattering For the Noninvasive Detection of Protein Aggregation
Wednesday, February 01, 2006
Protein homogeneity is an important issue in many fields of research, be it the characterization of newly isolated molecules, the identification of ... Read More
Statistics in Analytical Chemistry: Part 20—Recovery Curves
Wednesday, February 01, 2006
In Part 19 of this series (American Laboratory Dec 2005), the use of an internal standard (IS) was discussed and an example was given. Read More
Taking Thermogravimetric Analysis to a New Level of Performance and Convenience
Tuesday, January 03, 2006
Thermogravimetric analysis (TGA) is an established technique for studying the thermal stability of materials and for determining and understanding... Read More
How Pierced PTFE/Silicone Septa Affect GC-MS Experiments
Monday, January 02, 2006
The analysis of a sample generally involves a series of steps in which glassware and other sample processing hardware are used. Read More
A Multifrequency Temperature- Modulated Technique For DSC
Sunday, January 01, 2006
In conventional differential scanning calorimetry (DSC), a sample is subjected to a temperature program with a constant heating rate. As a result, the... Read More
Capillary Electrophoresis–Sodium Dodecyl Sulfate of a Heavily Glycosylated Protein: Feasibility of Stability Monitoring
Sunday, January 01, 2006
In the biotechnology industry, traditional sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE)has been widely used to monitor the ... Read More
Procurement and Supply of Cell Storage Systems for the Biotechnology Laboratory
Thursday, December 01, 2005
Specifying a cell storage system is an important decision for any life sciences laboratory. Read More
Statistics in Analytical Chemistry: Part 19—Internal Standards
Thursday, December 01, 2005
The previous several articles have dealt with calibrationstudy design and calibration-diagnostic procedures. Read More
Exploring the Full Range of Temperature When Faced With a Difficult Separation
Thursday, December 01, 2005
Carotenoids such as beta-carotene, lutein, zeaxanthin, and lycopene are believed by many scientists to act as powerful antioxidants that protect ... Read More
Making Surface Tension Measurement a Practical Utility for Modern Industrial R&D
Thursday, December 01, 2005
Vast numbers of new surfactants are introduced annually for improved formulation and functionality in products ranging from personal care (e.g., soaps... Read More
Mercury Measurements: Overcoming Contamination and Interferences to Enable the Correct Measurements for Valued Judgments
Thursday, December 01, 2005
Interest and concern about the levels of mercury in its various forms in the environment have been well documented over the last 50 years. Read More