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Sample Preparation and Measurement of Cholesterol in Pig Bile Using SPE and GC/MS
Thursday, February 21, 2019
Heidi Fleischer Kerstin Thurow Kinjal Ramani
A sample cleanup method by solid-phase extraction and a GC/MS measurement method for cholesterol determination were developed and validated. Read More
Sample Cleanup for the Analysis of Pesticide Residues and Polynuclear Aromatic Hydrocarbons in Fatty Food Matrices
Tuesday, April 05, 2016
Katherine K. Stenerson Michael Ye Olga Shimelis Emily Barrey Michael Halpenny
Concern about pesticide residues and polynuclear aromatic hydrocarbons (PAHs) in food has led to the regulation of maximum contaminant levels, and highlighted the need for more sensitive and selective... Read More
Safety and Environmental Considerations in the Life Sciences Laboratory
Friday, September 05, 2014
Larry Gallagher
In life science laboratories and biotech firms, safety and environmental issues can be presented by the gases and cryogens utilized in the processes and controls. From simple oxygen deficiency that ... Read More
Routine Maintenance in ICP-MS: Critical When Monitoring Elemental Impurities in Pharmaceuticals
Tuesday, May 01, 2018
Robert Thomas
Routine maintenance is critical in ICP-MS, and this article provides guidance on keeping the sample introduction clean. Read More
Role of Cetyltrimethylammonium Bromide in Preparing Porous In-TiO₂ Photocatalytic Material
Friday, January 02, 2015
Wenjie Zhang Xiaobei Pei Jinlei Chen
The application of TiO₂ as the main photocatalyst on degradation of organic pollutants has been widely investigated. Metal ion doping can retard recombination of photogenerated electron-hole pairs in ... Read More
Rethinking Ultrapure Water
Tuesday, September 05, 2017
Véronique Fontalbat
With an intelligently designed water purification system, each step of the ultrapure water workflow can be improved for great efficiency, ease of data management, and improved sustainability. Read More
Response Scene Chemical Confirmation with GC/MS
Friday, August 24, 2018
Philip Tackett
This article discusses a real-life scenario in which a person-portable GC/MS was used for on-site identification of an unknown substance that caused an adverse reaction. Read More
Research Tools for Three-Dimensional Cell Culture
Friday, September 07, 2012
Caitlin Smith
In contrast to 2D cell culture, 3D cell culture is better able to approximate in vivo conditions early in the research process. These early-stage data can provide important information about a ... Read More
Removing the Barriers to High-Sensitivity Microflow Liquid Chromatography/Mass Spectrometry
Wednesday, May 01, 2019
Tyler Davis
Microflow LC provides sensitive analysis of biologics and small-molecule drugs. Read More
Reliable and Effective Trace-Level Total Sulfur Determination Using New Injection and Combustion Technologies
Thursday, February 26, 2009
Rene van der Windt Arthur van Strien
Total sulfur and nitrogen (TS/TN) levels are commonly used parameters in the petrochemical, natural gas, and oil refining industries, and the need for their determination is growing due to the ... Read More
Reintroducing Countercurrent Chromatography to the Chemist
Friday, October 24, 2008
David Keay Philip Wood
Ever since chemists began using separating funnels to isolate compounds by partitioning, they have understood the potential benefits of liquid/liquid chromatography, known today as countercurrent ... Read More
Refrigeration Practices for Biological Sample Preservation
Friday, February 17, 2017
Robert Sandor
Preservation of biological samples such as tissues, plasma and forensic and pathology specimens relies on maintaining proper storage temperatures and on the type of sample and analysis to be done. ... Read More
Reference Standards Address Technical Challenges in DNA Resequencing
Tuesday, August 04, 2015
Natalie A. LaFranzo
The extensive workflow required to analyze DNA samples using next-generation sequencing (NGS) leaves many opportunities for the introduction of variability. Read More
Reducing the Total Cost of Biological Safety Cabinet Ownership
Tuesday, May 01, 2018
Martin Cole
Minimizing the total cost of BSC ownership can help lab managers realize their sustainability goals through energy savings and reduced heat emissions. Read More
Reducing Solvent Emissions in the Laboratory
Monday, September 26, 2016
Amy Valladares
Processes such as concentration and evaporation generate tons of solvent vapors annually that are released into the atmosphere. Read More
Reducing Microplate Result Variability Using an AI-Based Approach
Tuesday, August 07, 2018
Paul Hensley
Artificial intelligence-based analysis of individual well patterns is a powerful tool with the potential to reduce the effect on assay variability due to surface chemicals. Read More
Reducing Cell Culture Costs By Reducing Serum Levels
Wednesday, November 01, 2006
John A. Ryan
Cell culture is a very important research tool today, but one that is also very expensive to use. Read More
Reduced Carryover Using an LC Autosampler System
Thursday, October 01, 2009
Osamu Shirota Kazuhiko Mibayashi Yasutaka Naruse Masashi Mita
Recent high-sensitivity and high-throughput trends in liquid chromatography,influenced largely by the latest interfacing technologies of mass spectrometry, seem to demand further improvements in ... Read More
Redefining the Rheometer
Monday, October 27, 2008
Steve Carrington
The way in which materials flow or deform when a force is applied can have a direct impact on product performance. Read More
Recovery of Styrene Monomer From Waste Polystyrene Using Catalytic Degradation
Monday, February 18, 2008
Jasmin Shah M. Rasul Jhan Abdur Rahim
Polystyrene (PS) continues to be used worldwide because of its excellent physical properties and low cost. Read More